25" X 14" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE fixed bar + Product Details Size &

+ Product Details Size & Compatibilty - The 5" to 4" round metal pipe reducer & increaser 30 gauge is compatible with duct 5" to 4"

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+ Product Details Size – 10"w X 14"h or 14" x 10" is the size for the duct opening measurement only

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

25" X 14" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE fixed bar + Product Details Size &+ Product Details Size 25"w X 14"h is the size for the duct opening measurement only, [Outer Dimensions: 27. 5"w X 16. 5"h] Actual Filter Size 24 3 4"w x 13 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,