Arrow Lock MK33-BD-26D Grade 2 Asylum Function Knob

Arrow MK33-BD-26D Grade 2 Asylum Function Knob combines durability and elegant design, making it an ideal choice for commercial applications where heavy-duty hardware is not required. This Grade 2 cylindrical lock features a ball knob and a conventional cylinder, finished in a sleek satin chrome that seamlessly integrates into various architectural styles. Designed with versatility in mind, the MK Series accommodates door thicknesses ranging from 1-3/8" to 1-3/4" and offers a standard backset of 2-3/8" with options available. The lock chassis is constructed from cold-rolled steel and treated with a zinc dichromate finish for enhanced corrosion resistance, ensuring longevity in demanding environments. Additionally, the MK33-BD is non-handed, allowing for easy installation on either side of the door. It features a solid brass 6-pin cylinder, which can be masterkeyed for added security. Each lock is supplied with two 5-pin brass keys for immediate use. Furthermore, it meets the UL Listing requirements and is fire-rated for up to 3 hours. With its combination of functionality and aesthetic appeal, the Arrow MK33-BD-26D is a reliable solution for professionals seeking quality and performance in door hardware.

Grade 2 Asylum Function Knob

Grade 2 Asylum Cylindrical Lock, Ball Knob, Conventional Cylinder, 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