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UL Listed for 3 hour fire door
Door range 1-5/8" - 2-1/8" for all functions except ND85; 1 3/4 "- 2" for ND85
1/2" Throw
Tested to at least 3 times the 1,000,000-cycle ANSI Grade 1 requirement
Premium durability and performance in a lock which is easy to service and maintain
The ND-Series has long been one of Schrage's best selling mechanical locks for good reason - it's tough, durable, Grade 1 rated and fits a wide variety of applications. Now we've made our trusted ND-Series lock even better by making it easier to install. We've added these enhancements because we know that a lock installed correctly the first time will last longer and perform better. The result: greater peace of mind that every door is safe and secured with a lock built to last.