Perforated Diffusers

Perforated Maximum Security Diffuser

The Holyoake CPMS Perforated Maximum Security Diffuser has been designed specifically for maximum security prisons. The diffuser has been tested to meet grade 2 requirements of American Corrections Standard ASTM F2542 (Standard test methods for physical assault on ventilation grilles for detention and correctional facilities).

  • Heavy duty construction for maximum security prisons.
  • 3mm stainless steel mounting frame supplied with all required holes for installation.
  • 1.8mm thick perforated stainless steel diffusion plate.
  • One piece construction face plate provides a seamless finish.
  • 2mm diameter holes for 22% free area.