Recommended for all commercial applications for barrier free access. Independent springs for each side of lever, which reduces lever sag. FUNCTION: From outside by lever except when locked from outside by key. Inside kever always freee. Deadlatching latchbolt ; FEATURES: Cylindrical leverset ; Heavy-duty lever springs ; Limited, Lifetime warranty ; Meets ADA ; SPECIFICATIONS: Backset: 2-3/4'' ; Door thickness: 1-3/8'' - 1-3/4'' ; Case: Corrosion treated, heavy-gauge cold rolled steel mechanism ; Latchbolt: Solid brass, 1/2'' throw deadlatching. Adjustable for beveled door keyed functions. U.L. Listed ; Strike: ASA standard 4-7/8'' x 1-1/4'' ; Hand: Reversible ; Cylinder: 6 pin tumbler (keyed 5) KA2 ; Keyway: SC1. Will accept US1539 Cylinder ; U.L. Listings: Listed for ''A'' labeled doors ; Certification: ANSI 156.2, Series 4000 Grade 2 Imported ; Packaging: 10 per case