Probrico Ball Knob with Rosette Interior Privacy Door Knobs Black Finish 6 Packs
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Confirm with ANSI Grade 3, Exceeds 200,000 cycles;
2-3/8" or 2-3/4" (60mm or 70mm) adjustable backset, fits doors thickness: 1-3/8" to 1-3/4" (35mm to 45mm);
Note : The square plate of the latch is unremovable
Universal handing; fits both right handed and left handed doors;
Probrico new design, popular ball knob style with special rosette.
Privacy: with lock function but keyless, you could locked inside, but can't open outside as there is no key. Usually for Bedroom/Bathroom door. (could open with coin in emergency)