30" X 12" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Supply Grille actual front end outer dimensions

actual front end outer dimensions are 15

+ Product Details Size - 28"w X 14"h is the size for the duct opening measurement only

Traditional HVAC systems were designed for cold air

Filter Size - 20

+ Product Details Size - 14"w X 20"h is the size for the duct opening measurement only

30" X 12" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Supply Grille actual front end outer dimensions+ Product Details Size 30"w X 12"h is the size for the duct opening measurement only, [Outer Dimensions: 32. 5"w X 14. 5"h] Actual Filter Size 29 3 4"w x 11 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,