Corbin Russwin CL3551 Grade 1 Classroom/Intruder Cylindrical Lock, ConventionalĀ  Double Cylinder Princeton (PZD) Lever

Standard Features

  • Non-handed
  • Door Thickness: 1-3/4″
  • Backset: 2-3/4″
  • Strike: 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
  • Two nickel silver keys
  • Function: Classroom or Intruder


  • Solid cast levers
  • Independent return springs to prevent lever sag
  • Through-bolted cylindrical chassis prevents rotation and ensures proper alignment
  • ANSI Grade 1 certification
  • Trim and keying compatible with other Corbin Russwin locksets

Finish Options:

613E, 626, BSP, WSP, 612

Call or email for additional finishes, levers and all other customizations.