Yale 820R-C3-4 Security Barricade Single-Cylinder Deadbolt, Polished Brass Single-cylinder deadbolt lock with 1-inch throw for residential entries All-metal, adjustable latch for durability and easy installation Backset adjusts from 2-3/8 to 2-3/4 inches for a wide variety of door styles Spindle length accommodates 1-3/8- to 2-inch door thicknesses Simple installation with screwdriver only