Classroom Intruder Function Mechanical Lock (Dual Cylinder)



The CL3100 Series is a patented Grade 1 lever lockset manufactured with the highest quality materials to ensure strength, durability and quiet operation. Available in all standard architectural finishes, the CL3100 series complements any high-use commercial, industrial and institutional application.

T-Zone Construction

The Corbin Russwin CL3100 Series interlocks the aligning and latch tubes, which form a rugged torque resistant “T” in the critical twist area. This “T-Zone” construction, combined with long lasting components, makes this lock strong and durable! The unique T-Zone construction provides strength and durability far exceeding the 156.2 Series 4000 Grade 1 standards.


  • High Traffic areas
  • Offices
  • Public buildings
  • Hospitals
  • Institutions
  • Educational facilities – K-12 and Universities
  • Retail


  • 18 functions available, including Hospital Privacy; most requiring only 2 parts to change function
  • Simple cylinder removal provides easy change outs
  • 10-year limited warranty
  • Made from 68% post-consumer recycled content as per LEED MR credit 4
  • Available in 11 hardware finishes and Microshield® antimicrobial coating
  • Integrates into most existing facility’s key systems, and accepts Schlage® LFIC
  • Retrofits most standard 161 cylindrical lock door preps and is non handed

U.S. Patent No 6,626,018


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