School Security – Grade 1 Cylindrical Locks

XGT/GT Series Classroom Intruder

PDQ’s GT Series Grade 1 Cylindrical Locks offer best in class performance and value. Patented School Security Classroom Intruder Function is designed to keep staff and students safe in the event of an emergency lockdown.

  • Quick and simple testing inside the classroom, no need to go outside of the classroom to test the lock.
  • Red LED indicator confirms the lever is locked from the inside of the classroom.
  • Arrow shows the direction to turn the key for rapid lockdown, especially helpful in a panic situation.
  • Built from the Grade 1 XGT/GT extra heavy-duty cylindrical lock.


Proudly made in Lancaster, Pennsylvania, USA



For Doors:
  • 1-3/4” to 2-1/4” thick
  • Preset for 1-3/4” door
  • Through door thru-bolting
Door Prep:
  • Standard ANSI A156.115 (161) for Cylindrical Locks
  • 2-3/4” Standard. 3-3/4” and 5” Optional (Ordered from factory only).
  • Heavy duty zinc diecast, investment cast, chromated cold rolled steel, stainless steel and EZAC™ diecast mechanism. Billet Steel spindles for locking functions
  • 2-1/4” x 1-1/8”
  • Stainless Steel or Wrought Brass
  • Beveled 1/8” in 2”
  • ASA standard
  • T-Strike or Full Lip Strike optional
  • Stainless Steel or Wrought Brass
  • 9/16” Throw Deadlocking
  • 3/4” Latch projection for available as option.
  • Non-handed
  • Solid Zinc diecast PHL, BSN or MIA Levers
  • 41° Lever Rotation Standard with 2-3/4” backset
  • Wrought Brass Roses, Concealed Screws
  • 65° Lever Rotation Standard with 3/4” latch for double doors (Ordered from factory only) and all 3-3/4” and 5” backsets (Ordered from factory only)
  • Two (2) per Lock
  • SCC standard (Schlage C Compatible)
  • Also available in keyways of other manufacturers
Interchangeable Core:
  • Available for all keyed functions
  • 6 or 7-pin
  • Large Format IC Core available for PHL Lever ONLY.
  • Compatible with Best, Falcon and Arrow.
  • 6-pin Brass Insert Cylinder keyed to 5-pins
  • Options: MK, CMK or GMK
  • Zero Bitted (KO), Keyed Different (KD) or Keyed Alike (KA)
  • Can be keyed into existing master key systems
  • 605 (US3) Bright Brass, 613 (US10B) Oil Rubbed Bronze, 619 (US15) Satin Nickel, 622 (US 19) Flat Black, 626 (US26D) Satin Chrome
  • Other finishes available. Contact PDQ Customer Service
  • Optional Antimicrobial Coating 626 (USD26D) only‡
Certifications, Listings Compliances:
  • UL/CUL 10C listed for 3 hrs, for single doors up to 4’0” x 8’0”
  • Certified to ANSI/BHMA A156.2-2011, Grade 1
  • California Education Code Compliant (Functions GT135, GT135LED, GT145)
  • Federal Specification FF-H-10C (Superseded by A156.2)
  • Florida Building Code HVHZ (High Velocity Hurricane Zone) listed, FL21376. Maximum design load rating: ± 70 PSF for single doors 3' x 7'.
  • Complies with ADA (Americans with Disabilities Act) and ICC/ANSI 117.1 for Accessible and Usable Buildings
  • Twenty-five (25) year Limited Warranty
Country of Origin:
  • Proudly Assembled in the U.S.A. with U.S. and foreign material. Meets requirements of the Buy American Act.

Functions – School Security

GT Series - Functions

Architectural Finishes

  • 626 (US26D) - Satin Chrome Plated, No Coating

  • 622 (US19) - Flat Black

  • 605 (US3) - Bright Brass, Clear Coated

  • 606 (US4) - Satin Brass, Clear Coated

  • 612 (US10) - Satin Bronze, Clear Coated

  • 613 (US10B) - Oil Rubbed Bronze, Oxidized Satin Bronze, Oil Rubbed, No Coating

  • 630 (US32D) - Satin Stainless Steel, No Coating

  • 625 (US26) - Bright Chromium Plated, No Coating

Electronic Access Control

Fail Safe/Fail Secure Electrical Specifications:
  • Input voltage: 12-24VDC or 12-24VAC.
  • 24 Volts AC/DC +/- 10%
  • Operating Current: .150A
  • 12 Volts AC/DC +/- 10%
  • Operating Current: .250A
  • Includes rectifier for AC voltage
  • Solenoid operated

Cross Reference

GT Series - Cross Reference


• Factory tested to over 3 million cycles (3 times the ANSI/BHMA Grade 1 standard)
• Lever torque tested to over 2,100 in-lbs (3 times the ANSI/BHMA Grade 1 standard)



How to Order

GT Series - How to Order

How to Order – Electronic Access Control

GT Series - How to Order