48" X 24" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES 2-Way Deflection + Product Details Size -

+ Product Details Size - The listed 4" diameter refers specifically to the size of the duct opening

+ Product Details Size – 10"w X 10"h is the size for the duct opening measurement only

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+How To Measure A Grille Overall Size:

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48" X 24" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES 2-Way Deflection + Product Details Size -+ Product Details Size 48"w X 24"h is the size for the duct opening measurement only, [Outer Dimensions: 50. 5"w X 26. 5"h] Actual Filter Size 47 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,