Install the Defender Security Brass Lock and Door Reinforcer to guard against forced entry. It works with wood or metal doors with a mortise or drive-in latch as well as key-in-knob locksets or deadbolts. 2-3/4 Inch backsetBrass finishUse on a wood or metal door with a mortise or drive-in latchAccommodates a key-in-knob lockset or deadboltAssists in preventing forced entryReinforces and repairs doorsSolid brass or stainless steel door channel