Attack-Resistant Security Glazing

AttackDefend™ attack-resistant security glazing is created for use in correctional facilities, government buildings, courthouses, post offices, police stations, rehabilitation facilities, and similar buildings.

AttackDefend™ is a multi-ply glass clad polycarbonate security glazing with a polycarbonate core and glass on both exposed surfaces for added durability, and is produced in four strength levels that meet ASTM F-1915 Grades 4 – 1: 10, 20, 40 and 6.


Tested to meet top security standards:

Forced Entry Standards

  • ASTM F1915 Grades 1-4
  • HP White TP-0500.03 Levels I – II
  • ASTM F1233 Classes 1.0 – 3.2

Ballistic Standards

  • HP White TP-0500.03 Levels A-C
  • ASTM F1233 Class HG2
  • UL 752 Level 3

Applicable Standards

  • ANSI Z97.1 (Safety Cat I & II)
  • ASTM C1036
  • ASTM C1172
  • ASTM C1048
  • ASTM C1349

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The key to safety and security glass is selecting the right solution for each application in a facility.

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Live Demo: AttackDefend™


The McGrory Glass Defend™ line of life-safety glazing offers a wide selection of performance-related, threat-protection, security glazing, and fire-rated products that protect against fire, human invaders, and ballistic weapons.

McGrory Glass Defend™ Security Glazing solutions undergo rigorous testing to meet top security standards where our glass is subjected to numerous assaulting elements in a sequence of steps using blunt and sharp instruments, thermal stress, and chemical deterioration.

Watch as Security Division Director, Chad Snyder, puts it to the test.

McGrory Defend - As Seen on NBC

Need help with other necessary glazing solutions, like radiation shielding glass, decorative glazing, or secure large format glass panel mounting for walls, ceiling, and seismic?

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