Box pack. Hall/closet. For interior doors where a simple latch is all that is required. Plain knob on both sides. Turning either knob will retract latch at all times to open door. Dual option latch includes: 1/4" round corner and 1" circular drive in latch, adjustable for 2 3/8" or 2 3/4" backsets. Strike: 1/4" round corner full lip strike. Grade 2 construction. Lifetime mechanical warranty. 10 year finish warranty.