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