Performance Complies with ANSI A156.2, Series 4000, Grade 2 400,000 cycles, UL/ULC listed for 3 hour fire door, Chassis Cylindrical construction, Latch 1-1/8 x 2-1/4, square corner faceplate, 1 housing diameter (stainless steel), 1/2 throw, Rose 3 diameter, Backset 2-3/4, Finish US32D Satin Stainless Steel, Strike 1-1/4 x 4-7/8 square corner, ANSI ASA Strike, Cylinder Standard Schlage (SCC) - 6-pin solid brass, C keyway, keyed different (KD), Keys Two nickel silver, Door Range 1-3/8 to 1-3/4, Door Preparation 2-1/8 diameter for knob, 1 diameter for latch bolt. Fits standard 161 door prep
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