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Ideal for demanding commercial, industrial, and institutional applications, the CK4300 Series is a standard cylindrical lockset which combines traditional knob aesthetics with ANSI/BHMA Grade 1 reliability and durability.
Function:
Deadlocking latchbolt by key in outside knob or by rotating inside knob.
Outside knob always rigid.
Inside knob always free.
Certifications:
UL listed and UL10c compliant
UL-cUL Listed for use on fire doors having a rating up to and including 3-hours
See more about Corbin Russwin CK4357 Grade 1 Storeroom or Closet Cylindrical Knob Lock here