Von Duprin Lever Trim Key - Heavy-Duty - Right Hand Reversible - 98/99 Series - Fire-Rated - Silver - Satin Chrome Finish - Maximum Door Height 96" - Maximum Door Width 48" - Fits Stile Width 5" - For Door with Thickness 1-3/4" to 2-1/4" - Heavy Traffic - Overall Length 10-3/4" - Overall Width 2-3/4" - Grade 1 - Standards ANSI A156.3 (2001) - ADA Compliant - Features Key Retracts Latch.