The 9k cylindrical locks are UL listed by Underwriter's Laboratories for use on 3 Hr, A label single swinging doors (4'x10'), GYJT Builders hardware-single point locks or latches. The locks are designed as per ANSI A156.2, Series 4000 Grade 1 (formerly FF-H-106C Series 161.). The locks are available in various finish including 605 3 bright brass, 606 4 satin brass, 611 9 bright bronze, 612 10 satin bronze, 613 10B oxidized satin bronze, oil rubbed, 618 14 bright nickel plated, 622 19 flat black, 625 26 bright chromium plated, 626 26D satin chromium plated and 690 20 dark bronze. The 2 3/4" standard backseat is available in 3 3/4" and 5". The locks feature solid latches and lever handles.