Development Of The Large Format Interchangeable Core

The development of the large format interchangeable core (LFIC) was a significant innovation in the field of lock security and convenience. It primarily aimed to address the need for scalable, versatile, and secure keying systems, particularly in environments like universities, hospitals, government buildings, and corporate campuses, where managing access across a large number of locks and users is a challenge. Here’s a brief overview of its development:

Origins of the Interchangeable Core Concept

1. Early Locking Systems: Traditional pin tumbler locks required a full disassembly of the lock cylinder to change the keying, a labor-intensive process.

2. Development of Small Format Interchangeable Core (SFIC): SFIC was introduced as a way to allow quick rekeying without disassembling the lock hardware. Manufacturers like Best Lock Corporation pioneered this design in the early 20th century.

Evolution to Large Format Interchangeable Core

1. Demand for Larger, More Robust Systems:

• SFIC had limitations in terms of durability and the ability to handle complex keying systems.

• For institutions requiring higher security and larger master keying systems, a more robust interchangeable core was necessary.

2. Design and Functionality:

• LFIC shares the same basic principle as SFIC: a removable core that can be easily swapped using a specialized control key.

• The larger size accommodates more robust internal components, better durability, and enhanced compatibility with high-security keyways.

3. Key Industry Players:

• Companies like Schlage, Sargent, Medeco, and ASSA ABLOY contributed to the development and proliferation of LFIC designs, each with proprietary features and security enhancements.

4. Benefits of LFIC:

• Ease of Rekeying: Facilities can rekey locks in seconds by swapping cores without specialized tools.

• Scalability: Supports complex master key systems with hundreds or thousands of locks.

• Security Features: Advanced LFICs include hardened steel inserts, restrictive keyways, and patented key control systems to prevent unauthorized duplication.

Current Applications and Future Trends

• Applications: LFIC systems are widely used in commercial, institutional, and government settings.

• Advancements:

• Integration with electronic and smart locks.

• Enhanced resistance to lock-picking, bumping, and drilling.

• Modular designs that allow integration with other locking technologies.

The development of LFIC was a pivotal step in modernizing lock systems, balancing ease of use with enhanced security. The development of the large format interchangeable core (LF

• Scalability: Supports complex master key systems with hundreds or thousands of locks.

• Security Features: Advanced LFICs include hardened steel inserts, restrictive keyways, and patented key control systems to prevent unauthorized duplication.

Current Applications and Future Trends

• Applications: LFIC systems are widely used in commercial, institutional, and government settings.

• Advancements:

• Integration with electronic and smart locks.

• Enhanced resistance to lock-picking, bumping, and drilling.

• Modular designs that allow integration with other locking technologies.

The development of LFIC was a pivotal step in modernizing lock systems, balancing ease of use with enhanced security.

History Of The Small Format Interchangeable Core

The Small Format Interchangeable Core (SFIC) is a key innovation in lock and security systems, particularly in commercial and institutional settings. The SFIC system allows for quick and efficient rekeying of locks without needing to disassemble the entire lock hardware.

 Here’s an overview of its history and development: 

 1. Origins in Master Keying and Interchangeability • The concept of interchangeable lock cores evolved from the need for flexible and efficient rekeying in multi-user environments. • Early interchangeable core designs can be traced back to the mid-20th century, building upon earlier advancements in pin tumbler and wafer lock technologies. 

 2. Introduction by Best Lock Corporation • The SFIC system was pioneered by Frank E. Best, founder of the Best Lock Corporation, in the late 1920s and early 1930s. • Best developed a patented figure-8-shaped core, which became a defining characteristic of SFIC. • This innovation allowed the lock core (the part containing the pins and keyway) to be removed and replaced using a specialized control key, bypassing the need for traditional rekeying methods. 

 3. Standardization and Popularity • Over time, the SFIC became standardized, with the industry adopting specific dimensional guidelines for core compatibility across brands. • The system gained popularity in commercial, institutional, and government applications, especially in schools, hospitals, and office buildings. • The flexibility to quickly rekey without extensive labor made SFIC a preferred choice in environments with high turnover or varying security needs. 

 4. Expansion and Competitors • Other manufacturers, such as Falcon, Schlage, and Arrow, began producing SFIC-compatible cores. • Despite competition, the Best SFIC design remains a benchmark in the industry. 

 5. Modern Developments • Recent innovations include the integration of SFIC with electronic access control systems, further enhancing security and convenience. • Enhanced material quality and precision manufacturing have improved durability and resistance to tampering. Advantages of SFIC • Quick Rekeying: Reduces downtime and labor costs. • Flexibility: Compatible cores allow users to mix and match brands while maintaining standard functionality. • Security: The control key ensures only authorized personnel can change cores. The SFIC system remains a vital component of modern security infrastructure due to its adaptability, efficiency, and legacy of innovation.

Advantages of SFIC

• Quick Rekeying: Reduces downtime and labor costs.

• Flexibility: Compatible cores allow users to mix and match brands while maintaining standard functionality.

• Security: The control key ensures only authorized personnel can change cores.

The SFIC system remains a vital component of modern security infrastructure due to its adaptability, efficiency, and legacy of innovation.

Advantages of SFIC

• Quick Rekeying: Reduces downtime and labor costs.

• Flexibility: Compatible cores allow users to mix and match brands while maintaining standard functionality.

• Security: The control key ensures only authorized personnel can change cores.

The SFIC system remains a vital component of modern security infrastructure due to its adaptability, efficiency, and legacy of innovation.

What Is Your Preferred Door Hardware Color Finish?

 What Is Your Preferred Door Hardware Finish?

What is your preferred door hardware color finish? We have been taking a long look through our invoices over the last 15 years and determined the most popular and preferred color finish selections from our vast list of clients.

The stock photo above is an image of a piece of nickel. We include it here because of the sudden rise in the market price of nickel ore, just in the last 2 days. We suspect there are obvious reasons for this sudden spike, given the political and economic upheavals our world is currently experiencing, but this story made me think about the most common request for color finishes of door hardware, knobs, deadbolts, lever entrance sets. thumbpress entrance locksets, hinges, peepholes, door sweeps, blocker plates, wrap-arounds etc, among some of the products we have sold, serviced and installed over the years.

The common finishes in the market in the USA and other countries around the world are pretty much similar even though some places choose varying preferences, which could be regional among other reasons. 

I'm sure people across the industry and around the world, decorators, interior and exterior designers, locksmiths, builders, retailers etc would enjoy understanding why some color selections are made over others and if you would like to share your preferred color finish choices in the comments below that'd be great.

According to our deep dive into our books, the preferred door hardware color finishes are topped by the Satin Nickel choice.

Antique Brass comes a distant second followed closely by polished brass, with venetian bronze and florentine bronze bringing up the rear. Black is finding more traction in recent years but is still farther down the list of preferences.

We have been representing a few manufacturers over the last 15 years, including Serrature Meroni products, Assa-Abloy Lockwood, Schlage, Kwikset, Weslock, Hooply, to name a few. 

Many contractors and retailers will offer a variety of color options to fit the unique tastes of clients. Simply ask your chosen contractor if your desired door hardware color finish is available.

If you want to know more about door hardware color finishes and styles of door hardware, Contact Us on 314-266-1533 or by email and a customer service person will be glad to help.

A Rough Year...

 2021 was a very rough year for us. Just like most others, we suffered measurably with the downturn in business thanks in no small part to the Covid 19 pandemic. Business has not returned to previous levels and the long term prognosis is not good at all. We are thankful to our clients who continue to use our services, especially for door and door hardware repairs. Actual locksmith calls has cratered significantly and we are modifying our products and services offerings as a consequence. 

We are still offering some services like:

• Door Unlocks (if you are locked out)
• Safe Openings (repairing and opening safes)
• Lock rekeys (if you have lost a set of keys or are moving into a new place)
• Door hardware repairs (if your handle or hinges are broken or out of alignment)
• Key cutting (residential and commercial keys - not car keys)
• Door closer repairs (if your door isn't closing correctly)

We have moved on from offering some hardware lines due to supply difficulties While we still carry a very small amount of these lines:

• Meroni
• Bilock
• Lockwood
• Schlage
• Weslock
• Kwikset

We are no longer competitive on many of them.

We have adjusted our hours tremendously too, because we have taken on additional employment during these difficult times. We are only available by appointment still and will be available more in evenings and weekends in future.

We are still offering free surveys and estimates. And our advice consulting services remain free too. We continue to refer to specialist colleagues for our customers needs that we cannot fulfill.

If you have need of door repair advice or a consultation, feel free to contact us at your convenience by Calling Us On (314)266-1533  You are also welcome to Email Us on sales@locks210.com

ADI Block Lock - Total Security Bolt Protection Unrivaled The World Over

This is the top security ADI Block Lock made by ADI Security, an Australian manufacturer of superb security products originally founded by Brian and Peter Preddy and being bought out by Locksmith Supply Company a few years ago. Locksmith Supply Company are the original Locksmith Industry supply house that has provided hardware, machinery and tools to the locksmith industry in Australia for almost 100 years. 

We recently brought in (to USA) a number of these specialty lock products for use as custom security products for our clients needs. We are negotiating with LSC to become an exclusive distributor for this product line in the USA.

We brought in their through fix bolt version with some extended bolts, which are particularly useful for doors or cabinets where the frame construction may be wider apart than standard frames.

We will post some images and a video of our installation in a follow up post.

As expected, quality security products like these are not cheap. Quality costs a fair price. These ADI products are very good quality. I have personally installed many of their varying products over the last 35 years in the industry and attest to their strength and reliability.

We have also written about some of ADI's other products over the last 10 years, like the ADI Cap Lock, a product designed for tradespeople like plumbers and electrians who often carry long rooftop containers on their vehicles to transport pipes, cables, rods etc that are too long to conveniently carry inside their secure vehicles. The Cap Lock secures the end of the tube, protecting from theft and unauthorized access.

Another of ADI's products we have written about is the Slim Line Patio Bolt, an especially designed and constructed product that is super strong and able to be used on narrow frames of doors or gates. Like other ADI products, the Slim Line Patio Bolt also uses an oval key cylinder that can also be converted to many differing brands of high security restricted key cylinders, like Bilock, Abloy Protec, Medeco, Schlage Primus, C123, Multilock among other brands (consult your local restricted key system provider for compatible restricted key cylinders to suit)

We welcome inquiries from interested consumers and fellow security professionals, who may find a use for these fantastic security products.

About To Celebrate Our 12th Anniversary With The Home Advisor/Angie's List Network

Below you can see our page hosted on Home Advisor. We have been continued members since 2007 of the Home Advisor network of service professionals.

When the parent company of Home Advisor acquired Angie's List late last year and completed merging the two networks together, the created a behemoth in the lead generation market, a market that has seen meteoric rise since Google began their Adwords program.

The early days of lead generation began with companies developing advertisements using the Google Adwords platform. At that time PPC (pay per click) was in it's infancy and costs for clicks were around 1-5 cents per click. 

Enter lead generation marketers.

They discovered methods through the Google architecture to use prime positioning in Adwords to build their lead generation networks, effectively raising the cost per click to prices unsustainable by small businesses alone. Then they could sell memberships to service providers and charge for customer's contact details. This opened a modern market formerly controlled by Yellow Pages and other directory advertising portals. What makes gthese lead generation companies money is the ability to sell these leads to multiple service professionals at rates significantly less than those service professionals would have to spend to acquire customers in ways past.

We are lucky enough to have received 380+ reviews from customers we have served with most being 5 star, Please enjoy the page shown below and feel free to comment in the box provided beneath.

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We Recently Acquired The Inventory Of A Closing Bilock Dealer - New Discounted Inventory Coming Up For Sale

 We just acquired the entire inventory of a closing Bilock dealer in USA.

We will be contacting their clients soon to maintain their security systems and continue to offer them parts and services.

Being the largest Bilock dealer in the Midwest, we continue to supply these sensational 100% bump proof and virtually pick proof, copy proof keys and locks to discerning buyers intent upon maximizing the security of their homes and offices.

We will soon be offering a steep discount on some of the acquired inventory.

 Bilock continues to provide up to 1.7 million key changes in a master keyed system. Color coding the keyheads enables simple and quick identification and separation between doors, locks, buildings etc.

Using the unique Quick Change Core technology, users will not require to disassemble and reassemble any cylinders or hardware, when the need arises to have your locks rekeyed.

 The 21 different colored keyheads allows us to design unique color coding for systems that allow users to quickly identify the correct color used for the correct door or for different levels of master keys to operate separate key cylinders.

The 21 colors and shades, comprise 3 separate parts allowing potentially over 9000 color combinations by mix and matching pieces. This can be of benefit to users significantly.

 The unique OEM (Original Equipment Manufacturer) product pictured in the diagram here, displays the Slam Cam deadlatching cam lock. Perfect for steel cabinet doors or drawers, it allows for unparalleled cabinet and drawer locking strength. The added ability to include these locks in your Quick Change Core system, makes this product a sought after item. With the key only able to be withdrawn in the open position, losing your key or leaving it unattended is virtually avoided.

 The 4 main cylinder types include key-in-knob cylinders used in entrance sets and deadbolt locks, padlocks other OEM products.
The Rim cylinder is seen in surface mounted panic bars, surface mounted nightlatches, surface mounted deadlatches, jimmy-proof deadbolt locks, gates locks (see image below) among other uses.

 The Grade 2 Deadbolt offers high quality security in a competitively priced package. Typically the OEM Bilock Grade 2 deadbolts are available in Polished Brass, Satin Stainless Steel, but we also happily provide cylinders and cores that will suit other brands of harware including (but not limited to) LSDA - Antique Brass, Bronze, Chrome Plate, Yale, Schlage, Arrow and other leading brands.

 This is a closer image of the typical rim cylinder.

 Here is an image of a Bilock Rim Cylinder installed to a Hurricane Fence gate. Combined with a hardened steel blocker plate that doubles as a gate stop, this very strong gate lock is virtually indestructible,

The wide range of Key-in-knob cylinders allows use in deadbolts, entry knob sets, lever handle entrance sets, storeroom door lock sets, classroom door lock sets, sliding patio door lock sets among other uses.

 This image displays the common core that will fit into many different and separate cylinder housings. See the key inside the core? That core will fit into all the surrounding styles of cylinders, meaning you can have 1 single high-security bump proof and virtually pick proof key system that will operate across multiple brands and hardware needs. Padlocks, Oval Cylinders, cam locks, Entrance Sets and Deadbolts, Mortise Locks, Rim Locks, even electrical switches. The unique Bilock system is almost limitless in it's applications.


Knobs, levers, almost any application can be supported using Bilock

 The Bilock Range is quite vast and useful in display case security, Euro cylinders, cupboard deadlocks and latches, padlocks of differing sizes and materials, all conveniently controlled by one unique bump proof and virtually pick proof key.

 See the 3 sections of the key head? we can put together separate colors to help you identify your keys easily.

Even push projection locks can be used to secure hard to lock wooden drawers, Bilock products leave no options out.









We have been continually offering Bilock products throughout the world for almost 35 years now, having installed this fabulous system to casinos, hospitals, clinics, universities and colleges, private and public schools, bars and restaurants among many and varied applications.

Customer choose Bilock for it's unique looking key and the wide range of products that can be secured.

Many modern day electronic security providers also choose to include Bilock Extreme-Security key cylinders in their ranges of offerings. One such company is Salto. (click on the link to learn more about Salto)

Kwikset Smartkey Problems.... (Update)

8/23/2018 UPDATE: We just updated the video above to a better video from our colleague Terry Whin-Yates.

The original post, including many comments from viewers can be found here.

The post in the link above is by far, the most popular and frequently viewed post on this website.




Came across an interesting blogpost today that has several comments by product users, all complaining about similar problems shortly after installing Kwikset Smartkey locks.

One such comment by a poster....

"Our smartkey failed this evening. We locked both deadbolt and door as we left, came home to locked out. I called kwikset and after working with them on the phone trying to wiggle the key to the 1/4 turn position to try and get it to the learn position – nothing worked. The customer support person said since we had keys duplicated using the grinding method instead of having a locksmith stamp them out the keys had made the cams in the lock out of alignment. I asked CS how we will get in if we are on the OUTSIDE wanting in and he said we would have to either find another way in or drill out the cylinder. They are sending a replacement cylinder. No thanks – I don’t want to take the chance."

Another...

"My husband just bought this and installed it yesterday. While “rekeying” to our key, it stopped working! Now both the key that came with it doesn’t open the door nor the new key. I was looking for the company’s website for troubleshooting the problem and found this! Glad we kept the receipt as this installation is not continuing! Thank you all for commenting! You are saving more people from getting ripped off with this lock!"

Another...

"What a nightmare.My baby boy moves out to his first house and buys the kwikset smartkey to assure his security.comes home one night,pouring down rain and 28 degrees outside cant get in the house the key doesnt fit the lock .He has to sleep out in the car all night long.what a nightmare.never again will a smartkey be bought especially $80.00.there needs to be a recall on the kwikset smartkey.what a let down."

Another...

"What a joke, installed YESTERDAY, worked perfectly fine until coming home today with groceries and a 6 month old, to find out our key no longer worked. Was told by customer service that this is NOT an issue and people do not have this problem (Obviously I told him to check this website, because he was wrong)

Option one, I can take the deadbolt off my front door to bring to Home Depot and have them fix the lock, which would leave my house unsecure as there would be NO lock on my door. The other option is to wait 5-7 days for a new lock from them. He said the new lock they will send me is more efficient then the one month old lock already installed and he guarantees it will not have this problem.

In the meantime, how the heck am I supposed to get in and out of my house if my lock doesn’t work?

WHAT A JOKE! Take these stupid things offffff the market"

Another...

" I received the new smart key cylinder from

Kwieset and installed it on the front door. From the get-go I had problems, only some of the existing keys worked. Bought new keys and they seemed to work better for a short time. Now they are giving me problems. I have to jiggle them inside the lock to unlock the door and even now they are giving me problems. Finally I had enough: no trust in the lock and never knew when I would be locked out again. I took the smart key cylinder out and installed the old lock, which is a non smart key. At least now I have peace of mind that it will always work. I am keeping the old smart key locks, because I know with all the problems that everybody is having, there has to be a recall and maybe I can get my money back, but I will not hold my breath. Keep complaining to Kwikset about the so called smart key. I wasn’t very smart to buy it in the first place."

Many people seem to think that locksmith services are too expensive. In fact locksmith services are often cheaper than purchasing the DIY products from the big box hardware stores, because locksmiths have taken the time and training to master their product lines. Installation, service, maintenance all taken care of by a true technician with experience in the field.

I understand the perception that DIY is often cheaper, but realistically the locksmith (one of the oldest professions) has deliberately trained to service, advise and protect consumers from the poor advice and suggestions often received at the big box stores from untrained, unknowing part time sales assistants.

I regularly see both Kwikset Smartkey and Schlage Securekey products in the field. Often they are purchased by consumers at the big box hardware stores because most locksmiths refuse to stock them.

I can easily reset the tumblers for clients, often because they have lost the reset tool for the Kwikset or are simply unaware that the process is uncomplicated. The Schlage Securekey is a little more complicated process to re-key, but this is because many customers no longer have access to the blue reset key.

For the better (and often cheaper) products, visit your local locksmith today and find out the why's and how's behind purchasing suitable functional and correct locking systems and products.

See also Kwikset Smartkey Locks - Making Keys

Kwikset Smartkey Fault

Allegion Announce Acquisition Of Leading Australian Residential Hardware Manufacturer And Largest Australian Locksmith Company

Breaking News: Allegion, the parent company announced 30 days ago (May 13, 2018), their acquisition of leading Australian residential door hardware manufacturer Gainsborough and at the same time the acquisition of Australia's largest locksmith service provider API Locksmiths.















Gainsborough produce many leading residential door hardware among other offerings.

Gainsborough Hardware can be found in many dwellings and is even becoming a sought after offering to the wider USA market.





API Locksmiths are one of Australia's oldest and longest established locksmith companies. In fact, I completed my apprenticeship with AF Stewart Locksmiths in 1988 before they were later (much later) acquired by API Locksmiths.

This acquisition by Allegion is a major shake up of the locksmith market across Australia.






Allegion are well known in North America and around the world as the parent company behind brands like:

AD Systems

AD Systems are a company first established in 2013 specializing in upscale commercial sliding door entrance systems, tailored to hospitals, medical clinics and offices to meet the modern needs of doctors, architects and space conscientious builders and tenants.

Our Most Popular Posts Of All Time...

Pictured above is a list of our all time most popularly viewed posts, including their publication date, pageviews and number of comments.

When we began writing this weblog, we hoped to receive a few visits from readers of the world wide web and are reasonably happy with our progress.

When we began writing this blog in 2007, we thought it might provide our main website and consequently our penetration into the wider market, we had no idea that it would prove as popular as it has. While we could be posting more often, for being a micro-business, we just havent the staffing levels to support enough authors, editors and trained staff to operate the multiple tasks needed to keep the business operating. Therefore, we are only finding limited time to write new content.

You are welcome to click on each page link provided below and read the articles our visitors have found and continue to find most popular...

Kwikset SmartKey Problems

Schlage Securekey Problems...

Contagion

Credit Cards Used To Duplicate Keys

Bicycle Lock - A New Adaption

The Gun Debate Rages On And On...

Lockwood 7444 Keyed Pocket Door Lock

Bicycle Security - A New Look At The Infiniti3D System

Pocket Door Locks With Key - UPDATE

Schlage Securekey Fault

Delaware To Update School And Institution Security Hardware Requirements To Overhauled Policy

Classroom Security has been becoming an alarming and increasing issue across North America in recent years, with the increasing numbers of armed intruders causing havoc to junior elementary (sub-primary), elementary (primary), junior high school and senior high school campuses, as well as a number of higher education colleges and universities.

Intruders, often bullied former students or disgruntled staff members, are fast becoming a major thorn to the security of our children while they are at school.

Delaware State House of Representatives, this week is currently debating and voting on a major policy change and update, aimed at increasing significantly, the security hardware and protocols at all the states schools, colleges and universities.

Many schools across the USA, already use quality door lock systems to secure doors, but many of the existing measures have been found wanting in recent times. This has caused much angst by parents and teachers, concerned with offering quality education to our children in safe, secure environments.

There are a great many products across the wider marketplace that already offer significant strength and security, but too few schools are bothering to spend the necessary investments to protect their faculty, staff and pupils.

There are many different brands of lock systems that provide increased strength and design, to better protect our children, including double cylinder lever entrance sets (called Classroom Locksets), including but not limited to Yale, Corbin, Schlage, Arrow, Assa, Abloy and many others.

Essentially, "a double cylinder classroom lockset functions like almost any other lever or knob entry set, except that it uses an internal keyed cylinder to enable the locking of the outside handle, while ensuring the inside handle remains unlocked and still easy to escape through, if required (maintaining life safety and International Building Code policies and rules)."

Some schools and institutions are spending millions of dollars to increase the security of their classrooms and entrances, but often they neglect to ensure that doors and windows include bullet resistant glass or resistant window films. Many seem to believe that the quality lockset and an alarm system will provide enough security to prevent an armed intruder from wreaking havoc through their schools.

Delaware are debating the inclusion of alarm systems, bullet proof accessories and double-keyed locksets.

In our 35+ years of locksmithery across the world, we have installed many locksets to school entrances and classrooms to increase the security of these doors.

In one case many years ago, one school decided to install double cylinder deadbolts to every door, as recommended by their security analyst and architect, before consulting with professional locksmiths, who are deliberately trained in physical hardware that complies with life safety, building codes, insurance requirements to protect would-be users of these rooms.
Our company was asked to install according to the plan and completed the request, against our better judgement, while warning the school officials that their desire was not legal. One week prior to the opening of the new school term, state and local inspectors came in to certify the school for opening, but when they saw the double cylinder locks fitted to all doors, they immediately failed the school because they did not comply with building and life safety codes.
Our company was once again called in to rectify the issues with new "approved" products that met or exceeded the codes, adding significant cost to the project. Our company worked overtime to complete the task prior to the school opening on time.

This reinforces the point that involving your local trained professional locksmith can and will augment your bottom line costs and save you considerable angst and compliance issues down the road.

There are many professional locksmith companies across North America, that provide trained professionals with field experience that are able to provide best-case-scenario advice, that will help any organization to increase their physical and electronic security measures, without breaking the bank.


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Meroni Nova Entrance Set Installed In Place Of Very Old Schlage Privacy Knobset with 5 Inch Latch Backset

Image1

 A couple of days ago, a returning customer (we love these), requested to install a lockable knob to an office door at their home.

The particular door had about a 45 year old Schlage Privacy Knobset with a 5 inch (127mm) latch backset mechanism.
(see image 1)

The knob was in the color US26D or Satin Chrome (Nickel).

To measure the latch backset on your door, measure the distance between the edge of the door and the center of the handle.

Image 2

Image 3

(Image 3 shows the interior of the lock)







Now, finding an identical replacement entrance set would have been a time consuming chore, especially considering many manufacturers do not make 5" (127mm) latch backset mechanisms anymore. The standard residential latch backset mechanism in America is 2-3/8" (60mm), while the standard commercial latch backset mechanism in America is 2-3/4" (70mm).
(Image 2 shows a close up view of the original knob)

Luckily for us, as the North American distributor for the fabulous Serrature Meroni lock products, we keep a number of their unique handle and door hardware products in stock.

All the door handles in this beautiful home are in US26D (Satin Chrome) and we needed to be sure to provide a suitable entrance set that matched the interior decor of the house.

Image 4

 After removing the old lock and mechanism we replaced the latch mechanism with a Meroni 5" (127mm) latch backset mechanism.

(Image 4 is external) (Image 5 is internal)

Image 5

Image 6

Image 7

Image 6 shows the existing strike plate fitted to this beautiful frame. We decided to not install the accompanying Meroni strike plate, because to do so would have meant modifying the existing strike plate cutout in the frame and would have looked, amateur. Instead we modified the existing strike plate tom accept the Meroni latch

Image 7 shows the Meroni Nova N13 Entrance set, as it looks from inside. A turnbutton for inside use and key operated on the outside.

Image 8

Image 8 displays how beautifully the Meroni Nova N13, matches the decor of the house.

The lock is simple to operate and has no turning method. You simply push the button to operate the mechanism.

The broad color options of Meroni Doorware pleases discerning home owners and interior designers, wishing to match their doorware to color schemes of their homes.

Quite simple to install and operate, these products have been in the North American market about 20 years and enjoy great longevity because of their quality.

One extra benefit to using any of the range of Meroni doorware is the ease of use, especially for arthritis suffers or the physically challenged.

Competitively priced and user friendly, Meroni doorware offers customers nouveau - modern, aesthetically pleasing hardware to complement virtually any decor.

Available exclusively from Master Key Systems America LLC.