Mfr #: 1690 Designed for single point, 1690/rotating latch lockers Automatic deadbolt locking U.S. Patent No. 7,984,630 and other U.S. and foreign patents-pending Secure, easy to dial 3-digit combination Longer useful life with 5 different pre-set combinations; easily changed to maintain security End user registration and control charts provided to secure and simplify administration Customize with optional color metal dials. Choose from Red, Blue, Green, Purple or Black. See Catalog for details. Use Model 1695MKADA for ADA Applications Extension kit available for doors with a thickness of 11/16in (17mm) to 3/4in (19mm) School, Employee & Health Club Product Number: 1690 Description: Control Key, Commercial Boxed Packaging Master Carton Qty: 50 Body Width: 1-7/8 in (48 mm) Color: Gray