Wright Products MLPUS3 Impressions Melody Passage Knob, Polished Brass Non-locking passage knob for residential and light commercial closets and hallways Solid-forged brass handle for unsurpassed durability; 6-way latch stainless steel bolt Fits doors 1-3/8 to1-7/8 inches thick Adjustable for 2-3/8- or 2-3/4-inch backsets to fit a wide variety of doors Meets ANSI Grade-2 security specs, UL listed with a 3-hour fire-rating