ProSource HSH-042SBN-PS Door Reinforcer, 2-3/8 in Backset, 1-3/8 in Thick Door, Steel, Satin Nickel, 4-1/2 in H, 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 1-3/8 in thick. The reinforcer is made of stamped stainless steel.