Heavy-duty commercial storeroom lever, complies with ANSI A156.2, Grade 2 (400,000 cycles), UL listed for 3 hr fire door, ANSI A117.1 American Disabilities Act (ADA). Keying of six-pin SCC keyway with two nickel keys per lock. Door range of 1-3/8 to 2 in. Backset of 2-3/4 in standard. Strike, T-strike (1-1/8 in x 2-3/4 in) standard. Cylindrical, steel-coated with zinc dichromate (corrosion resistance). Latch bolt operated by rotating inside lever or key in outside lever. Outside lever always fixed.