20" X 36" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Ducting Components Optional Butterfly Damper Available At

Optional Butterfly Damper Available At Asin: B007CNEL1W

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Iron and Stainless Steel Tube/Pipe - Comes with Handle that attaches easily to cutters

Designed for a 1" thick filter

20" X 36" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Ducting Components Optional Butterfly Damper Available At+ Product Details Size 20"w X 36"h is the size for the duct opening measurement only, [Outer Dimensions: 22. 5"w X 38. 5"h] Actual Filter Size 19 3 4"w x 35 3 4" x 1" High Quality High quality rust free, strong aluminum construction with smooth finished edges for easy and safe use; Filter grille features a user friendly plastic latch that requires no screwdriver for opening. Installation Location Sidewall and ceiling. Design Heavier gauge than needed,