7KC Listed by Underwriters Laboratories for use on 3 hour, A label single swinging doors (4' x 8' ). Certification- This product is listed in BHMA Directory of Certified Locks and Latches as conforming to ANSI A156.3, Grade 2. California Administrative Code Title 19 and 24. Illinois Accessibility Standard. Top Cylindrical chassis to fit common door preparation. Standard and Drive-in latches available. Through-bolt mounting studs increase torque resistance. Internal steel mechanisms are corrosion treated for normal atmospheric conditions. ADA compliance title III. Lockset reversible for either hand of door without removing keyed lever.