2-1/8" bore not recessed 2-3/4" backset 4-5/16"W x 9"H Solid brass or stainless steel door channel Reinforces and repairs doors Assists in preventing forced entry Use on 1-3/4" thick wood or metal doors with mortise or drive-in latches Accommodates key in knob locksets or deadbolts Includes: 2 - No. 10 x 1" combo screws, 2 No. 10-32 hex nuts Brass finish