Simplex Auxiliary Pushbutton Latch

Product Description 1/2” (13mm) deadlocking latch pushbutton lock Fits doors 1-2/8”to 2-1/4” (35mm to 57mm) thick Covers existing holes up to 2-1/8” (54mm) in diameter For interior or exterior use. All mechanical – no batteries or wiring Thousands of possible combinations Always locked from the outside. Unlocks outside by depressing combinations & Rotating turn knob, Unlocks inside by rotating turn knob. 2-3/8” – 2-3/4” Adjustible Backset