Arrow MK01 Passage Knob Lock

Arrow MK01 Passage Knob. Arrow MK Series offer the Security Professional simple solutions to accessibility requirements. Their clean designs, architectural finishes and available functions make them ideal for commercial applications where heavy duty grade one hardware may not be necessary. Arrow MK01 Passage: Latch bolt operated by knob from either side at all times   Features Lock Chassis: Cold rolled steel with zinc dichromate finish for corrosion resistance. Requires standard 2-1/8" (53.97 mm) bore through door.Backset: 2-3/8" (60.32 mm) standard. 2-3/4" (69.85 mm), 3-3/4" (95.25 mm) and 5" (127 mm) available.Door Thickness: 1-3/8" (34.92 mm) to 1-3/4" (44.45 mm)Latch: Brass with 1/2" (12.7 mm) throw. Latch housing is steel, with zinc dichromate finish for corrosion resistance. 7/8" (22.225 mm) bore in edge of door is required.Latch Front: Brass or bronze. Standard faceplate for 2-3/8" (60.32 mm) backset measures 2-1/4" (57.15 mm) x 1" (25.40 mm), with a flat front, for 2-3/4" (69.