30" X 12" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Color_Aluminum + Product Details Size -

+ Product Details Size - 14"w X 6"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 20" OR 20" X 14" duct opening (measured at the opening)

Filter Grille features a user-friendly plastic latch that requires no screwdriver for opening

+ Product Details Size - 36"w X 24"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 Color_Aluminum + Product Details Size -+ 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,