The S005C-12DC series are used in replacement installations in wood jambs and iron gates and use with bored cylindrical locksets having up to 3/4" throw, based on 1/8" door gap. Features: Satin Chrome finish Faceplate: 3-1/2" x 1-3/8" 1000 lbs holding force Heavy duty latch spring Mortise type: Backset 2-7/8" 12 DC Fail secure-standard action (unlocks with power) Durability: 500000 life cycles