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Highest Security Guaranteed

Featuring sturdy steel and aluminum construction, our security grilles are designed to provide both optimum ventilation and security.
SG200 Grille, Round Perforated Pattern, Steel

SG200 Grille, Round Perforated Pattern, Steel

  • The 5/16” round holes offer a greater free area and maximize the airflow
  • An optional front or rear operated opposed blade damper can be welded to the sleeve
  • Can be utilized for supply and return applications
SG300 Grille, Round Perforated Pattern, Aluminum

SG300 Grille, Round Perforated Pattern, Aluminum

  • Vents are highly-secured with optional 1/2” diameter aluminum bars
  • 5/16” round holes on 7/16” staggered centers minimize pressure loss for supply and return applications
  • Damper with opposing blades modulate optimum air flow