ProSource HSH-046SBP-PS Door Reinforcer, 2-3/4 in Backset, 1-3/4 in Thick Door, Steel, Brass, 4-1/2 in H, 4-1/4 in W

This is a door lock reinforcer. It helps in preventing a forced entry. Can be used on any wood or metal door that is 1-3/4 in thick. The reinforcer is made of stamped stainless steel.