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 bolt 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.