Corbin Russwin CK4357 GRD 630 LC Grade 1 Storeroom Lock

Corbin Russwin CK4357 GRD 630 LC Grade 1 Storeroom Lock delivers exceptional security and functionality for high-use environments. Designed for commercial, industrial, and institutional applications, this Grade 1 storeroom/closet cylindrical lock features a sleek satin stainless steel finish that ensures durability and a modern aesthetic. The lock is non-handed, making it easy to install on doors with a thickness ranging from 1-3/8" to 2". Engineered for performance, the CK4300 Series boasts heavy wrought knobs lined with steel for enhanced impact resistance. Its robust construction includes a steel lock chassis that is zinc dichromated for corrosion protection, ensuring longevity even in demanding settings like schools, hospitals, and retail complexes. The latchbolt features a stainless steel throw of 1/2", providing reliable security. With a 6-pin brass cylinder and L4 keyway standard, this lock maintains high security while accommodating a range of door configurations. The ANSI curved lip strike further enhances its usability. Backed by a 3-year limited warranty, the Corbin Russwin CK4357 is a top choice for those seeking a reliable and stylish locking solution for storerooms and closets.

Grade 1 Storeroom Lock

Grade 1 Storeroom/Closet Cylindrical Lock, Global Knob, Conventional Less Cylinder, Satin Stainless Steel Finish, Non-handed

The CK4300 Series is ideal for demanding, high-use commercial, industrial and institutional applications, including, Schools, Hotels, Hospitals and Nursing Homes, Churches, Municipal Buildings, Airports, Retail complexes, Offices and Warehouses.

A traditional knob with ANSI/BHMA Grade 1 reliability and durability.

The CK4300 Series is ideal for demanding, high-use commercial, industrial and institutional applications. It's heavy wrought knobs are lined with steel for impact resistance. 

• Handing Non-handed.
• Door Thickness 1-3/8" (35mm) – 2" (51mm).
• Backset 2-3/4" (70mm) standard.
• Lock Chassis Steel, zinc dichromated for corrosion resistance.
• Front Wrought brass or stainless steel, 2-1/4" (57mm) x 1-1/8" (29mm). Accommodates doors beveled 1/8" (3mm) in 2" (51mm).
• Latchbolt Stainless Steel 1/2" (13mm) throw, 7/8" (22mm) diameter.
• Strike Wrought brass or stainless steel, ANSI curved lip standard, 4-7/8" (124mm) x 1-1/4" (32mm) x 1-1/4" (32mm) lip to center. Optional strikes, lip lengths and ANSI wrought strike box available
• Cylinder Brass, 6-pin, L4 keyway, 0-bitted standard.

Resources

• CK4300 Dummy Trim Installation Instructions
• CK4300 Installation Instructions
• CK4300 Series Cylindrical Lock Catalog
• CK4300 Series Grade 1 Cylindrical Knob Locks  Cut Sheet