Arrow Night Latch Lever Trim - Medium-Duty - Field Reversible Door Handing - S1100/S1200 Series - Fire-Rated - Silver in Color - Satin Chrome Finish - Fits Stile Width 3-1/2" For Door Thickness 1-3/4" - Used on Storeroom - Overall Length 4-3/4" - Overall Width 3-11/32" - Grade 1 Standards ANSI A156.3 - ADA Compliant - Style Lever - Features AR4 Keyway - Key Locks and Unlocks - Single Cylinder.