- Supply / Return with Square Holes (2″x2″) with a 1″ Fret Face Security Grille
- 3/16″ Thick Face, Steel Construction
- Wire Mesh (10 Gage, #2 Wire) Inserted Between Face Plate and Backer Plate
- Stich Welded Sleeve Length of 6″, 8″, 10″, 12″, or 18″
- Available with Rear or Front Operated Damper
- Optional Angled Frame, Anchor Bars, Round Security Bars, or Two Loose Angles
- Standard Finish is British White