Tell CL100006 Heavy Duty Commercial Grade 2 Ball Knob Storeroom LocksetHeavy duty commercial grade 2 ball knob storeroom lockset. Storeroom lock is always locked from the outside & always unlocked from the inside. 400,000 cycles, brass 6 pin cylinder, 2 3 4" backset. 1 2" throw latchbolt with "T" strike, 161 prep. Schlage "C" keyway with 2 keys, non handed. Fits doors 1 3 8" 2" thick. UL listed for "A" label. 3 hour, single swing doors, 4'0" x 8'0". Complies with ANSI A156. 2 series 4000. KC2386 EM Satin stainless steel