Corbin Russwin CK4351 GRD 613E Grade 1 Entrance Lock

Corbin Russwin CK4351 GRD 613E Grade 1 Entrance Lock offers exceptional durability and reliability for high-traffic environments. Designed for demanding commercial, industrial, and institutional applications, this Grade 1 cylindrical lock features a traditional global knob and a conventional cylinder, making it an ideal choice for schools, hospitals, airports, and more. Constructed with heavy wrought knobs lined with steel, the CK4300 Series delivers impressive impact resistance. Its non-handed design fits doors with a thickness of 1-3/8" to 2", accommodating both standard and beveled edges. The lock chassis is made from corrosion-resistant zinc dichromated steel, ensuring longevity in various settings. The CK4351 boasts a stainless steel latchbolt with a 1/2" throw and features a 6-pin brass cylinder with an L4 keyway for enhanced security. It is UL listed, meeting ANSI A156.2 standards, and comes with a 3-hour fire rating, making it a robust option for safety-conscious installations. With a dark oxidized bronze finish and ANSI curved lip strike, this lock seamlessly combines functionality with aesthetics. Backed by a 3-year limited warranty, the Corbin Russwin CK4351 is a reliable choice for those seeking quality and performance in door hardware.

Grade 1 Entrance Lock

Grade 1 Entrance/Office Cylindrical Lock, Global Knob, Conventional Cylinder, Dark Oxidized Bronze 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