The Schlage Plymouth Satin Chrome Commercial Keyless Passage Knob is ideal for interior doors where locks are not needed. The chassis is constructed of metal for long-lasting use and durability. It is easy to install with a single tool and mounting hardware is included. |Fits 1-3/8 in. to 1-3/4 in. doors|Full ball knob ideal for interior passage doors|Rugged all-metal chassis for durability|Backset is adjustable