Arrow Lock MK17-BD-04-LC Grade 2 Classroom Knob Lock

Arrow MK17-BD-04-LC Grade 2 Classroom Knob Lock combines functionality and style, making it an excellent choice for commercial applications. This Grade 2 cylindrical lock features a ball knob design and is less a cylinder, ensuring ease of use while meeting accessibility requirements. Its satin brass finish adds a touch of elegance, complementing various architectural styles. Built with durability in mind, the lock chassis is made from cold-rolled steel with a zinc dichromate finish that protects against corrosion. The MK Series accommodates standard door thicknesses between 1-3/8" and 1-3/4", with a standard backset of 2-3/8". The 1/2" throw brass latch provides reliable security without compromising on ease of access. Versatile and non-handed, this lock is reversible, making it suitable for various door configurations. The solid brass 6-pin cylinder allows for master keying, enhancing security options. With a fire rating of 3 hours, the MK17-BD-04-LC is UL Listed, providing peace of mind in commercial settings. Ideal for schools, offices, or any facility requiring controlled access, the Arrow MK17-BD-04-LC Grade 2 Classroom Knob Lock merges practical design with robust construction, ensuring safety and accessibility in one elegant package.

Grade 2 Classroom Knob Lock

Grade 2 Classroom Cylindrical Lock, Ball Knob, Conventional Less Cylinder, Satin 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