Yale 701RF-C3-4 Security Barricade Left-Handed Entry Lever, Polished Brass Keyed entry flat lever/ball for left-handed residential entryways 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