20" X 30" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Flat Oval- Vertical Elbow Transition + Product Details Size -

+ Product Details Size - 28"w X 20"h is the size for the duct opening measurement only

making it an indispensable component for heating

+ Product Details Size - 30"w X 26"h is the size for the duct opening measurement only

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this 30-gauge stick-on collar is specifically sized at 20 inches

20" X 30" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Flat Oval- Vertical Elbow Transition + Product Details Size -+ Product Details Size 20"w X 30"h is the size for the duct opening measurement only, [Outer Dimensions: 22. 5"w X 32. 5"h] Actual Filter Size 19 3 4"w x 29 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,