Exit Device Conversion

A lever lock-equipped fire door and jamb is converted to a rim exit device, while maintaining the fire rating.


To maintain consistency with existing product, several lock manufacturers offer lever rose trim that is the modified exterior assembly of a specific cylindrical lock. This means that converting to an exit device can appear seamless from the exterior if the lever trim has similar or identical roses and lever styles. These lever lock rose trims include the Sargent 10 Line, Monarch 814KIL, and Yale 440F. Cal-Royal non-handed lever lock rose trim is available with their patented freewheeling clutch. The rose diameter is 3-1/3”.

These lever trims are available having different functions including Nightlatch/Storeroom, Entrance, Classroom, Dummy and Passage. Most lock manufacturers offer varying keying options including conventional, removable core and interchangeable core in a variety of keyways and high security.

Trimco sells different styles of trim handles manufactured of different metals including stainless steel. They include Anti Vandal Handle Trims with and without an astragal. The astragal covers the opening between the door and the jamb providing latch protection.

As an alternative to a standard rim exit device, Ervos® Exit Technologies has developed an exit device that requires no modifications. The Ervos® X61S Exit Device Series is designed to be installed into a standard 161 door prep using a standard strike plate for the latching mechanism. Unlike the rim exit device surface mounted bolt, the X61 has a custom designed door edge mounted latch with dead latch. The X61 15/16” long latch bolt is incorporated into the standard 1-1/8” wide by 2-1/4” faceplate.

On the interior side of the door, the X61S bar extends 2-27/32” from the face of the door. When depressed, the bar extends 2-3/16”. On the exterior side of the door, a forged trim cover with pull handle retracts the latch bolt. In the center of the trim cover is a lock cylinder that can retract the latch or lock/unlock the locking mechanism depending upon the function.

The three hour fire rated Ervos X61S-F Exit Device will accommodate up to a 4’0” by 8’0” opening. The exit device has a three-year warranty.

There are many different choices when it comes to modifying a cylindrical equipped fire door or non-fire door to accommodate an exit device.

Before making any modification to a fire rated door, contact the LAHJ and discuss the installation. Prior to writing this article, I did research and was told that there should not be a problem. However, from past experience, it is always a good idea to make certain that the changes you want to make are acceptable to the authorities.

For more information on the discussed manufacturers’ and products, contact your local distributor or:

Cal-Royal Products, Inc.. Telephone: 323-888-6601. Web Site: www.cal-royal.com.

Corbin Russwin Architectural Hardware. Telephone: 800-543-3658. Web Site: www.corbinrusswin.com.

Detex Corporation. Telephone: 800-729-3839. Web Site: www.detex.com.

Don-Jo Mfg. Inc. Telephone: 978-422-3377. Web Site: www.don-jo.com.

Ervos Incorporated. Telephone: 412-221-3400. Web Site: www.ervostech.com.

Monarch Exit Devices & Panic Hardware. Telephone: 800-266-4456. Web Site: www.monarchhardware.com.

M.A.G. Eng. & Mfg. Co., Inc. Telephone: 800-624-9942. Web Site: www.magmfg.com.

Pro-Lok. Telephone: 714-633-0681. Web Site: www.pro-lok.com. Web Site: www.pro-lok.com

SARGENT Manufacturing. Telephone: 800-727-5477. Web Site: www.sargentlock.com.

Trimco. Telephone: 323-262-4191. Web Site: www.trimcobbw.com.

Von Duprin. Telephone: 800-999-0408. Web Site: www.vonduprin.com.

For more on standards, inspections and testing information contact:

National Fire Protection Association: www.nfpa.org.

Underwriters Laboratories: www.ul.com.

Intertek: www.intertek.com. www.intertek.com

To read additional Locksmith Ledger articles on exit devices, visit Web Site: www. tinyurl.com/exit0710.

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