Electronic Keyless Exit Trim Lock Narrow Stile Function Entry with Key Override Access Method Keypad Mounting Style Cylindrical Lock Material Aluminum Zinc Cast Finish Dark Bronze Series 3090 Handle Type Lever Door Thickness 1-3/4 in to 2-1/4 in Key Override Options Mortise Cylinder Hand Right Outside Height 15 3/8 in Outside Width 1 3/4 in Outside Depth 2 in Keypad Material Metal Power Source (4) AA Batteries Battery Life 40 000 Cycles