Corbin Russwin CK4410 Passage/Closet Cylindrical Lock - Grade 2, Global Knob, Non-Keyed

Corbin Russwin CK4410-NONKEYED Passage/Closet Cylindrical Knobset - Grade 2, Non-Handed, 1-3/8" to 1-3/4" Door Thickness

Commercial-Grade Passage and Closet Cylindrical Lock with Stainless Steel Latchbolt

The Corbin Russwin CK4410-NONKEYED is a Grade 2 passage/closet cylindrical knobset from the CK4400 Series, engineered for quality residential and light commercial applications including homes, apartments, motels, and offices. This non-keyed passage function lock operates with latchbolt retraction by knob from either side, with both knobs always free for unrestricted access. Designed for doors ranging from 1-3/8" to 1-3/4" in thickness with a 2-3/4" backset, the CK4410 delivers an outstanding combination of value and performance backed by a 3-year warranty.

Professional Features & Benefits

• Door Thickness Compatibility: Accommodates doors from 1-3/8" to 1-3/4" thick, providing versatile fit across a wide range of residential and light commercial door applications.
• Adjustable Latchbolt: Stainless steel latchbolt adjusts to accommodate both flat and beveled doors, ensuring reliable latching and long service life.
• Precision Corrosion-Resistant Mechanism: Precision manufactured internal mechanisms are zinc dichromated for enhanced corrosion resistance, supporting long-term durability in demanding environments.
• Passage Function Operation: Latchbolt retracts by knob from either side with both knobs always free, ideal for passage and closet doors requiring unrestricted access at all times.
• Non-Handed Design: Non-handed configuration simplifies installation and inventory management, fitting both left- and right-hand door applications without modification.
• Standard Strike Included: Ships with an ANSI curved lip strike measuring 4-7/8" x 1-1/4" x 1-1/4" lip to center for code-compliant installation.
• Standard Latch Included: Includes 574F55 latch with 2-3/4" backset, square corner front, and 2-1/4" x 1-1/8" face dimensions for precise door preparation.
• Manufacturer Warranty: Backed by a 3-year warranty for added confidence and protection in commercial and residential installations.

Technical Specifications

• Subcategory: Cylindrical Locks
• Product Group: Mechanical Locks
• Series: CK4400 Series
• Grade: Grade 2
• Keyed Function: Non-Keyed
• Standard Latch: 574F55 - 2-3/4" Backset, Square corner front, 2-1/4" x 1-1/8"
• Standard Strike: ANSI Curved Lip 4-7/8" x 1-1/4" x 1-1/4" lip to center
• Warranty: 3 Year
• ANSI/BHMA: F75
• Product Subgroup: Bored Locksets
• Product Type: Knobsets
• Keyed: No
• Fasteners: Wood and Machine Screws
• Commercial/Residential: Commercial
• Function Description: Latchbolt by knob either side. Both knobs always free.
• Lock Type: Cylindrical
• Handle Type: Knob
• Lock Function: Passage
• Product Attribute: Cylindrical Locks
• Product Model: CK4410
• Product Function: Passage/Hall/Closet
• Door Hand Direction: Non-Handed
• Door Thickness Range: 1-3/8" to 1-3/4"
• Product Category: Mechanical Locks
• Backset (Distance): 2-3/4"
• Department: Door Hardware

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness (1-3/8" to 1-3/4"), backset (2-3/4"), and bore hole dimensions as specified for the CK4400 Series.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on the door face and edge for the latch bore and cross-bore.
3. Prepare the door by drilling the required cross-bore and latch bore holes, and routing the latch face plate mortise on the door edge per manufacturer instructions.
4. Install the 574F55 latch assembly (2-3/4" backset, square corner front, 2-1/4" x 1-1/8") into the door edge and secure with provided wood or machine screws.
5. Mount the exterior and interior knob assemblies through the cross-bore, aligning the spindle and connecting components per manufacturer instructions. Secure with provided fasteners.
6. Install the ANSI curved lip strike (4-7/8" x 1-1/4" x 1-1/4" lip to center) on the door frame, mortising as required for flush fit.
7. Test latchbolt operation from both sides to confirm both knobs retract the latch freely. Make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• Fine Homes and Upscale Residential Properties
• Apartment and Multi-Unit Residential Buildings
• Motel and Hotel Interior Passage Doors
• Commercial Office Buildings
• Light Commercial Retail Establishments
• Interior Closet and Hallway Doors
• Property Management and Facilities Maintenance Applications

Why Choose Corbin Russwin Quality?

Corbin Russwin CK4400 Series cylindrical knobsets are precision manufactured with zinc dichromated internal mechanisms for corrosion resistance and feature stainless steel latchbolts for long-term durability in residential and light commercial applications. The CK4410 meets ANSI/BHMA F75 Grade 2 standards and is backed by a 3-year manufacturer warranty, delivering an outstanding combination of value and performance. Engineered for demanding applications where reliable, unrestricted passage function is essential.