The 4510 Series Deadlatch is made to be compatible with an aluminum door. A reverse key turn while the bolt is held retracts the latchbolt, allowing 2-way traffic. When latchbolt is extended, exit-only traffic is allowed. Compatible with an standard 1-5/32" mortise cylinder where an MS cam is installed. An auxiliary bolt helps prevent shimming.

Deadlatch, Hand LH or RHR, Steel, Satin Aluminum Finish, Backset 1 1/2 In., Front Size 1 x 6 7/8 In., Strike Length 2.63 In., Throw Length 1/2 In., Grade 1, ANSI/BHMA Type 8321 Standards, For Use With Narrow Stile Doors, Includes Bolt Holdback Feature