Corbin Russwin CK4351 GRD 630 LC Grade 1 Entrance Lock

Corbin Russwin CK4351 GRD 630 LC Grade 1 Entrance Lock offers unmatched reliability and durability, making it an ideal choice for high-use environments such as schools, hospitals, hotels, and municipal buildings. This Grade 1 cylindrical lock features a classic global knob design, ensuring both functionality and style. Its satin stainless steel finish not only enhances its aesthetic appeal but also provides corrosion resistance, ensuring longevity in demanding conditions. Designed with versatility in mind, the CK4351 is non-handed, accommodating door thicknesses ranging from 1-3/8" to 2". The lock chassis is constructed from steel, providing robust security, while the 1/2" stainless steel throw latchbolt ensures secure closure. With a standard backset of 2-3/4", installation is straightforward, and the ANSI/BHMA Grade 1 certification guarantees high-performance standards. The lock comes with a less cylinder option, allowing for customized security solutions. It also features a rose escutcheon with a 3-1/8" diameter, providing a polished look. The CK4351 is UL listed and fire rated for 3 hours, making it a reliable choice for safety-conscious applications. Trust in Corbin Russwin to deliver exceptional performance and peace of mind for your locking needs.

Grade 1 Entrance Lock

Grade 1 Entrance/Office 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