Corbin Russwin CL3320TO Grade 1 Time Out Extra Heavy-Duty Cylindrical Lever Lock

Corbin Russwin CL3320TO Time Out Extra Heavy-Duty Cylindrical Lever Lock, Non-Keyed, Grade 1, 1-3/4" to 2" Doors

Commercial-Grade Time Out Cylindrical Lockset for Institutional and High-Security Applications

The Corbin Russwin CL3320TO is an extra heavy-duty, non-keyed cylindrical lever lock engineered for demanding commercial, industrial, and institutional environments. Designed as part of the CL3300 Series, this Grade 1 lockset delivers the Time Out function: latchbolt operates by lever from either side (passage mode) unless a push button is depressed and held by a caretaker, at which point the detention side lever becomes freewheeling. The lock automatically returns to passage mode upon release of the push button, and both levers remain free at all times. Compatible with door thicknesses of 1-3/4" to 2" and featuring a 2-3/4" backset, the CL3320TO is built on a steel and zinc dichromated substrate for corrosion resistance, and is fire rated for added code compliance.

Professional Features & Benefits

• Door Thickness Compatibility: Designed for 1-3/4" to 2" doors, accommodating the most common commercial door profiles for broad installation flexibility.
• Standard Backset: 2-3/4" backset with a springlatch featuring a square corner front measuring 2-1/4" x 1-1/8" for precise, code-compliant installation.
• ANSI Curved Lip Strike Included: Ships with an ANSI curved lip strike measuring 4-7/8" x 1-1/4" x 1-1/4" lip to center (1-1/4" lip length) for reliable latching performance.
• Time Out Function: Passage operation from both sides unless caretaker depresses push button, causing detention-side lever to freewheel; lock automatically returns to passage mode upon push button release, with both levers always free.
• Grade 1 Heavy-Duty Construction: Extra heavy-duty, ANSI/BHMA Grade 1 rated for the highest level of commercial durability, suitable for high-traffic institutional applications.
• Lever Release™ Vandal Resistance: Proprietary Lever Release™ design allows the outside lever to rotate freely when in the locked position, providing engineered vandal resistance across all CL3300 Series functions.
• EZ-Install Components: Factory-engineered EZ-Install components significantly reduce installation time, and independent return springs prevent lever sag for long-term aesthetic and functional performance.
• Fire Rated: Fire rating available, supporting compliance with applicable life safety and building codes for fire-rated door assemblies.
• Corrosion-Resistant Substrate: Manufactured from steel with zinc dichromated treatment for corrosion resistance, ensuring long-term durability in demanding environments.
• Covers ANSI/DHI Door Prep A115.18: Compatible with standard ANSI/DHI door preparation A115.18 for straightforward integration with pre-prepped commercial doors.
• Manufacturer Warranty: Backed by a 7 Year Limited warranty for added confidence and long-term protection.

Technical Specifications

• Subcategory: Cylindrical Locks
• Product Group: Mechanical Locks
• Series: CL3300 Series
• Grade: Grade 1
• Duty Level: Heavy Duty
• Keyed Function: Non-Keyed
• Lock Function Description: Latchbolt by lever either side (passage) unless push button depressed and held (detention side becomes freewheeling). Lock returns to passage mode when push button released. Push button auto releases when not depressed. Both levers always free.
• Standard Latch: Springlatch - Square corner front, 2-1/4" x 1-1/8" 2-3/4" backset
• Standard Strike: ANSI Curved Lip 1-1/4" Lip Length
• Warranty: 7 Year Limited
• Product Subgroup: Bored Locksets
• Product Type: Leversets
• Keyed: No
• Commercial/Residential: Commercial
• Lock Type: Cylindrical
• Handle Type: Lever
• Product Attribute: Cylindrical Locks
• Product Model: CL3320TO
• Product Function: Time Out
• Door Hand Direction: Non-Handed
• Door Thickness Range: 1-3/4" to 2"
• Fire Rating: Yes
• Product Category: Mechanical Locks
• Product Substrate: Steel, Zinc dichromated for corrosion resistance
• Backset (Distance): 2-3/4"
• Department: Door Hardware

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness (1-3/4" to 2"), stile width, and handing as applicable to this product.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces per ANSI/DHI door prep A115.18.
3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions for the 2-3/4" backset configuration.
4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications using the EZ-Install components provided.
5. Adjust operational components for proper alignment, latching, and smooth lever operation throughout the full range of motion; verify independent return springs are properly seated to prevent lever sag.
6. Test Time Out function by depressing push button to confirm detention-side lever freewheels, then release push button to confirm automatic return to passage mode. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• Correctional and Detention Facilities
• Healthcare and Behavioral Health Institutions
• Educational Facilities and Schools
• Commercial Office Buildings
• Industrial and Warehouse Facilities
• Government and Municipal Buildings
• Multi-Tenant Residential and Institutional Properties

Vandal-Resistant Design

The Corbin Russwin CL3300 Series is engineered to meet today's increased security needs. All functions and models feature the Lever Release™ design for vandal resistance, allowing the outside lever to rotate freely when in the locked position. This design is standard across all CL3300 Series locksets, providing consistent protection against lever-based vandalism in high-traffic and institutional environments.

Why Choose Corbin Russwin Quality?

Corbin Russwin CL3300 Series cylindrical locksets are manufactured with the highest quality parts and materials — including a steel and zinc dichromated substrate for corrosion resistance — to ensure strength, durability, and quiet operation across years of dependable use. The CL3320TO carries a 7 Year Limited warranty and achieves ANSI/BHMA Grade 1 certification, the highest commercial grade available. Engineered for demanding commercial, industrial, and institutional applications where consistent, reliable performance is essential.