Prime-Line U9550 Lock and Door Reinforcer, 2-3/4 in Backset, 1-3/4 in Thick Door, Brass, Brass, 9 in H, 4-5/16 in W

This lock and door reinforce is constructed of solid, polished brass and fits 1-3/4 in THK doors. This security device assists in preventing forced entry by reinforcing the weak spot of an entry door and it can be used on both metal and wood doors. Accommodates key in knob locksets on doors that have a backset of 2-3/4 in these door reinforces are easy-to-install and they are used by many. All installation fasteners are included with this item. This guard features a 2-1/8 in bore, 2-3/4 in backset, 1-3/4 in door THK, 3-7/8 in W, 9 in H.