Corbin Russwin CK4310 Grade 1 Passage/Closet Knob Set

Corbin Russwin CK4310 Grade 1 Passage/Closet Knob Set

Function

For a passage or closet door that people use throughout the day, the CK4310 provides straightforward access from either side without a locking step. Its passage function keeps both knobs available for operation rather than restricting entry with a key or privacy button.

• Latchbolt operated by the knob on either side.
• Both knobs always free.
• Passage/closet function for non-locking door applications.

Grade 1 commercial performance

Part of the CK4300 Series, this standard cylindrical lockset combines traditional knob aesthetics with ANSI/BHMA Grade 1 reliability and durability. The series is designed for demanding commercial, industrial, and institutional applications.

Certifications

• ANSI/BHMA A156.2, Series 4000, Grade 1.
• UL listed and UL10C compliant.
• UL-cUL listed for use on fire doors rated up to and including 3 hours.