Prime-Line U 9589 Lock & Door Reinforcer, 2-1/8 in. x 2-3/8 in. x 1-3/8 in., Stainless Steel Used to reinforce and repair doors to aide in preventing forced entry Fits 1-3/8 in. thick doors, 2-1/8 in. bores, 2-3/8 in. backset, 3-7/8 in. width x 4-1/2 in. height Stainless steel Stainless steel