Pyracell Preventing Tradegy

The tremendous responsibility involved in assuming custody of another life can be an overwhelming duty. The men and women who run America’s correctional facilities have chosen to accept the role not only of custodian, but of protector. Despite their best efforts, some in their care will choose to harm themselves or others. Today, MET California Group, Engineering Solution is proud to announce the essential innovation that will dramatically reduce one method of inflicting harm.




For too long and often with disastrous results, correctional facilities have been forced to accept the bare minimum in security grille standards. This standard only requires that all holes be 3/16 inches in diameter. As demonstrated  the standard has literally left too many “loop” holes that can be used by individuals who are at their most vulnerable.

Our U.S. patented system has virtually eliminated the possibility of threading any item through the grille orifices. Nor can
anything be hidden inside the grille that could be used to cause harm. Additionally, The Pyracell system will not impede the airflow passing through it, making it the most advanced security grille on the market.


  • Face plate and sleeve: 3/16” steel (Optional 1/8” aluminum)
  • Pyramids: aluminum construction (Optional Polycarbonate)
  • Sleeve: 3/16” (available in 6”, 8”, 10”, 12” and 18” lengths)
  • Face and sleeve are welded construction
  • Pyramids are attached by locknuts
  • Standard finish is white (WH) or mill (ML)
  • Retro-fit available


  • Angle frame (AF): 1-1/2” x 1-1/2” x 3/16 steel angle iron welded at corners (shipped loose and unpainted for field mounting)
  • Anchor bars (AB): ¾” diameter x 3” long steel bars positioned 3” from the back of the face plate on the top and bottom of the sleeve