Corbin Russwin CK4320 Grade 1 Privacy Cylindrical Knob Lock

Corbin Russwin CK4320 Grade 1 Privacy Cylindrical Knob Lock

The Corbin Russwin CK4320 privacy cylindrical knob lock combines push-button privacy locking with an outside emergency release. Part of the CK4300 Series, it pairs traditional knob styling with ANSI/BHMA Grade 1 reliability and durability for demanding commercial, industrial, and institutional applications.

Function

Push the button to lock the outside knob when privacy is needed. The inside knob remains free at all times. For emergency access from outside, turn a coin in the emergency slot.

• Latch operation: The latchbolt is operated by the knob on either side when unlocked.
• Locking: Push button locks the outside knob.
• Unlocking: The outside knob unlocks by turning a coin in the outside emergency slot, rotating the inside knob, or closing the door.
• Inside operation: The inside knob is always free.

Commercial Grade 1 performance

The CK4300 Series combines a standard cylindrical lockset format with traditional knob aesthetics. Choose the CK4320 when you need privacy-function hardware with push-button control and an outside emergency slot, rather than a keyed entrance lock or non-locking passage set.

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.