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      GT Series - Grade 1

      Cylindrical Locks | GT

      Product Description

      Introducing the GT Series Heavy Duty Cylindrical Lock, designed for unmatched quality and longevity. This robust lock surpasses industry standards, cycle tested to over 3 times the BHMA requirements, ensuring durability in the toughest environments. With a 41-degree lever rotation that minimizes torque, the GT lock is engineered to extend its lifespan significantly.

      Crafted in Lancaster, PA, each GT Series lock is assembled with meticulous attention to detail, reflecting a commitment to American craftsmanship. Backed by an impressive 25-year warranty, you can rely on the GT Series for security and performance that lasts.

      Upgrade to the GT Series Heavy Duty Cylindrical Lock for superior strength and endurance in commercial and high-traffic settings. Built to exceed expectations, this lock embodies reliability and precision engineering, making it the ideal choice for your security needs.

      Ensure lasting security with the GT Series Heavy Duty Cylindrical Lock—your trusted solution for reliability and strength. Experience peace of mind knowing you've invested in a lock that meets the demands of heavy use while maintaining exceptional performance.

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      Features & Benefits

      Discover the unmatched durability and security of our GT Series Heavy Duty Cylindrical Lockset.

      • Featuring a heavy duty diecast chassis and machined billet steel spindle, this lockset is engineered for strength and reliability
      • The 13-gauge steel anti-rotation plate ensures a secure installation
      • Choose from 3 lever styles: Philadelphia (SFL and LFL), Boston (SFL), Miami (SFL)
      • Choose from 7 finishes: 605(US3), 606(US4), 612(US10), 613(US10B), 622(US19), 625(US26), 626(US26D)
      • A lever torque resistance of 2,200 lbf-in—3 times the BHMI/ANSI standard
      • A 2 : 1 latch bolt throw allowing a 41-degree lever rotation, the GT Series provides superior performance and longevity

      Invest in the GT Series for heavy duty security that exceeds expectations.


      The GT ANSI/BHMA Grade 1 Cylindrical Lock is backed by a comprehensive range of certifications.

      • It’s UL 10C listed for 3-hour fire doors, suitable for single doors up to 4’ x 8’
      • Opt for the optional 3/4” throw deadlocking fire latch (FRL) for pairs of doors, ensuring enhanced security and safety measures
      • Our GT cylindrical lock is certified to ANSI/BHMA A156.2 Grade 1 standards, guaranteeing top-tier performance and durability
      • Complies with the California Education Code (Functions GT135, GT135LED, GT145)
      • Meets Federal Specification FF-H-10C (now superseded by A156.2)
      • Approved for Florida HVHZ (High Velocity Hurricane Zone), with PDQ Product Approval: FL 21376 and a design load rating of ± 70.0 PSF for single doors (3’ x 7’)
      • Complies with ADA and ICC/ANSI 117.1 for Accessible and Usable Buildings, ensuring inclusivity and accessibility

      Choose the GT ANSI/BHMA Grade 1 Cylindrical Lock for unmatched security and compliance.


      • Twenty-five (25) year Limited 

      Country of Origin

      The GT Cylindrical Lock is proudly assembled in the USA using a combination of domestic and foreign materials. This lock fully complies with the Buy American Act as a Commercial Off-The-Shelf (COTS) product manufactured in the United States. Choose the GT Cylindrical Lock for American-made quality and compliance with federal procurement regulations.

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