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Stainless Steel Supply and Return Security Grille with Perforated Face (Sleeve)
The 91310 series maximum security grille features a perforated face plate that makes finger penetration difficult in areas that need a secure environment and 100% stainless steel construction. The 46% free area perforation provides minimum pressure loss, making the 91310 an ideal choice for secure areas that require large amounts of supply or return air.
  • Supply / Return Perforated Face Security Grille
  • 304 Stainless Steel Construction (Optional 316 Stainless Steel)
  • 5/16” Diameter Holes on 7/16” Staggered Centers
  • Stich Wleded Sleeve Length of 6”, 8”, 10” or 12”
  • Available with Rear or Front Operated Damper
  • Optional Angled Frame, Anchor Bars, Round Security Bars
  • Standard Finish is #3 Satin Polish