Arrow Lock MK12-DD-03-CS Grade 2 Storeroom Knob Lock

Arrow MK12-DD-03-CS Grade 2 Storeroom Knob Lock offers a reliable and stylish solution for commercial spaces requiring security and accessibility. This Grade 2 storeroom cylindrical lock features a Darrin knob design and a conventional cylinder with a Schlage C keyway, providing both durability and ease of use. Crafted from cold-rolled steel with a corrosion-resistant zinc dichromate finish, the lock chassis ensures long-lasting performance in demanding environments. Designed for doors with a thickness ranging from 1-3/8" to 1-3/4", the MK12 accommodates standard 2-1/8" bore holes and includes a brass latch with a 1/2" throw for dependable locking. The reversible handing allows for versatile installation, making it suitable for various door orientations. With its polished brass finish, this lock not only meets architectural standards but also complements a variety of design aesthetics. The MK Series provides an excellent alternative when heavy-duty hardware isn't necessary, while maintaining high functionality. Included with the lock are two 5-pin brass keys, ensuring you have what you need for immediate use. Furthermore, with a UL listing and a limited one-year warranty, you can trust in the quality and reliability that Arrow delivers.

Grade 2 Storeroom Knob Lock

Grade 2 Storeroom Cylindrical Lock, Darrin Knob, Conventional Cylinder Schlage C Keyway, Bright Brass 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