Arrow Lock MK series bright brass finish entrance/office Tudor T Wrought knob and A wrought rose cylindrical lockset. Dead locking latch bolt operated by knob from either side except when outside knob is locked by pushing turn button inside. Key outside/operating inside knob releases turn button unlocking outside knob except when turn button has been rotated to keep outside knob locked. Inside turn button must be manually operated to unlock outside knob. Inside knob always operates latch bolt. Lock Chassis are cold rolled steel with zinc dichromate finish for corrosion resistance. Latch is brass with 1/2-inches throw. Latch housing is steel, with zinc dichromate finish for corrosion resistance. 7/8-inches bore in edge of door is required. Reversible handling. Lock offer the designer, architect and contractor 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. Cylindrical locks are UL and cUL listed for use on 3 hour, A label/lesser doors, and are certified to ANSI/BHMA A156.2, 4000, Grade 2. Federal Specification FF-H-106C. For 1-3/8-inches to 1-3/4-inches door thickness. 3 year limited warranty.
