36" X 24" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Powder-Coated + Product Details Size -

+ Product Details Size - 12"w X 22"h is the size for the duct opening measurement only

Don’t worry

+ Product Details Size - 8"w X 34"h is the size for the duct opening measurement only

The 1/2" white insulation

36" X 24" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Powder-Coated + Product Details Size -+ Product Details Size 36"w X 24"h is the size for the duct opening measurement only, [Outer Dimensions: 38. 5"w X 26. 5"h] Actual Filter Size 35 3 4"w x 23 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,