Corbin Russwin CL3520 Grade 2 Privacy Heavy-Duty Cylindrical Lever Lock

Corbin Russwin CL3520-NON-KEYED Heavy-Duty Grade 1 Privacy Cylindrical Lever Lock with Push-Button Locking

Commercial-Grade Privacy Security for Bed, Bath, and Institutional Applications

The Corbin Russwin CL3520 is a heavy-duty, non-keyed cylindrical lever lock engineered to ANSI function F76A (Privacy Lock) for demanding commercial, institutional, and multi-family environments. Designed for doors ranging from 1-3/8" to 1-3/4" in thickness with a 2-3/4" backset, this Grade 1 leverset delivers reliable privacy functionality through a push-button outside locking mechanism with a freewheeling lever in the locked position. The outside lever can be unlocked by an emergency release tool from outside, by rotating the inside lever, or simply by closing the door, while the inside lever remains always free. Constructed from steel with zinc dichromated corrosion-resistant substrate, the CL3520 is part of the CL3500 Series, which complements the CL3300 Series Extra Heavy-Duty Grade 1 and CL3800 Series Standard-Duty Grade 2 locksets for a cohesive cylindrical lockset family throughout any facility.

Professional Features & Benefits

• Grade 2 standard-duty lever lockset per ANSI/BHMA A156.2 Series 4000, Grade 2
• Lever Release freewheeling levers for vandal resistance
• Solid cast levers with no plastic inserts
• Thrubolts prevent chassis rotation; ensure alignment, smooth operation and long life
• Non-handed spring cassette prevents lever sag
• 1/2" throw latchbolt accommodates 7/8" and 1" edge bore preps
• 2-3/8", 2-3/4", 3-3/4" and 5" backsets available
• UL/cUL listed for 3-hour fire doors up to 4' x 10'
• 14 finishes plus MicroShield® antimicrobial options
• High Security and security key systems available (Access 3®, Pyramid)
• Five-year limited warranty

Technical Specifications

• Grade: ANSI/BHMA A156.2 Series 4000, Grade 2
• Door Prep: ANSI/BHMA A156.115
• Handing: Non-handed
• Door Thickness: 1-3/8" to 1-7/8" (35–48mm) standard; optional 2" 2-1/4" (57mm)
• Backset: 2-3/4" (70mm) standard; optional 2-3/8", 3-3/4", 5"
• Latchbolt: Stainless steel, 1/2" (13mm) throw
• Front: Wrought brass, bronze, or stainless steel, 2-1/4" x 1-1/8" (standard)
• Strike: Wrought brass or stainless steel, ANSI curved lip, 4-7/8" x 1-1/4" x 1-1/4" lip to center
• Cylinder: Brass, 6-pin L4 keyway, 0-bitted standard
• Minimum Stile: 4-1/2" (114mm)
• Certifications: ANSI/BHMA A156.2 Grade 2; UL/cUL 3-hour fire rating; ADA A117.1; NFPA 80; Windstorm/Hurricane certified
• Warranty: Five-year limited

Professional Applications

• Interior Office Privacy Rooms
• Apartment and Multi-Family Residential Complexes
• Convalescent and Elderly Care Facilities
• Hotel Guest Rooms and Suites
• Restaurant Restrooms and Private Dining Areas
• Retail Center Fitting Rooms and Private Offices
• Educational and Institutional Facilities

Why Choose Corbin Russwin Quality?

Corbin Russwin CL3500 Series cylindrical lever locks deliver professional-grade reliability with solid cast levers, independent return springs, and a through-bolted cylindrical chassis engineered to ANSI/BHMA Grade 1 certification standards. The CL3520 is constructed from steel with zinc dichromated corrosion-resistant substrate and is backed by a 7 Year Limited warranty, providing lasting confidence for demanding commercial and institutional installations. Trim and keying compatibility with other Corbin Russwin locksets further reduces overall project costs without compromising functionality or durability.