Arrow Lock MK18-BD-26D-CS Grade 2 Communicating Classroo

Arrow MK18-BD-26D-CS Grade 2 Communicating Classroom Lock combines functionality and style for commercial applications. Designed for ease of use, this backplate cylindrical lock features a durable ball knob and a conventional Schlage C keyway cylinder, ensuring both security and accessibility. The sleek satin chrome finish complements any architectural design, making it an excellent choice for educational and institutional settings where heavy-duty hardware may not be necessary. Constructed from cold-rolled steel with a zinc dichromate finish, the lock chassis offers corrosion resistance while requiring a standard 2-1/8" bore through the door. The non-handed design allows for flexible installation, accommodating doors with a thickness ranging from 1-3/8" to 1-3/4". The brass latch features a 1/2" throw, ensuring reliable performance. With a UL listing and a Grade 2 rating under BHMA A156.2, this lock meets commercial standards for safety and durability. The MK Series provides various finishes and functions, making it adaptable to meet diverse project needs. Supplied with two 5-pin brass keys, the Arrow MK18-BD-26D-CS is the ideal solution for professionals seeking quality and reliability in their locking systems.

Grade 2 Communicating Classroo

Grade 2 Backplate Classroom Cylindrical Lock, Ball Knob, Conventional Cylinder Schlage C Keyway, Satin Chrome Finish, Non-handed

Arrow MK Series 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.

The Arrow MK Series has a clear design and is a simple solution to accessibility requirements.

The MK Series is available in several finishes and functions that make them ideal for commercial applications where heavy duty grade one hardware may not be necessary.

• Lock Chassis – Cold rolled steel with zinc dichromate finish for corrosion resistance. Requires standard 2-1/8" (53.97mm) bore through door.
• Backset – 2-3/8" (60.32mm) standard. 2-3/4" (69.85mm), 3-3/4" (95.25mm) and 5" (127mm) available.
• Door Thickness – 1-3/8" (34.92mm) to 1-3/4" (44.45mm). Latch – Brass with 1/2" (12.7mm) throw.
• Latch housing is steel, with zinc dichromate finish for corrosion resistance. 7/8" (22.225mm) bore in edge of door is required.
• Latch Front – Brass, bronze or stainless steel. Standard faceplate for 2-3/8” (60.32.mm) backset measures 2-1/4” (57.15mm) x 1” (25.40mm) with a flat front, for 2-3/4” (69.85mm) backset standard faceplate measures 2-1/4” (57.15mm) x 1-1/8” (28.57mm) with beveled front 1/8” (3.17mm) in 2” (50.8mm). 
• Strike – Brass, bronze or stainless steel. Standard “T” strike measures 2-3/4" (69.85mm) x 1-1/8" (28.57mm). Optional ANSI A115.1 strike measures 4-7/8" (123.82mm) x 1-1/4" (31.75mm). All strikes have a 1-1/4" (31.75mm) lip to center dimension.
• Handing– Reversible.
• Cylinder, Standard – Solid brass 6 pin cylinder with Arrow “A” keyway, keyed to 5 pin for stock. Can be masterkeyed, grandmaster keyed and construction masterkeyed. Conventional cylinders are also available in a variety of competitive manufacturer’s keyways. Supplied with two 5 pin brass keys for stock. Available in Schlage CS keyway and other competitive keyways.

Resources

• MK Series Cut Sheet
• MK Series Dummy Knob Template
• MK Series Grade 2 Cylindrical Knob Locks Cut Sheet
• MK Series Template