20" X 6" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Color_Red Oak compatible with duct 4"

compatible with duct 4"

+ Product Details Size – 6"w X 12"h or 12" x 6" is the size for the duct opening measurement only

+ Product Details Size – 16"w X 34"h is the size for the duct opening measurement only

Actual Filter Size – 19 3/4"w x 27 3/4" x 1"

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20" X 6" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Color_Red Oak compatible with duct 4"+ Product Details Size 20"w X 6"h is the size for the duct opening measurement only, [Outer Dimensions: 22. 5"w X 8. 5"h] Actual Filter Size 19 3 4"w x 5 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,