20" X 14" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 12" Round Duct Pipe + Product Description Ventilate your

+ Product Description Ventilate your home or commercial space with our Aluminum Outdoor Weatherproof Louvers

Actual Filter Size – 27 3/4"w x 11 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 26" OR 26" X 14" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 26" or 26" x 6" duct opening (measured at the opening)

20" X 14" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 12" Round Duct Pipe + Product Description Ventilate your+ Product Details Size 20"w X 14"h is the size for the duct opening measurement only, [Outer Dimensions: 22. 5"w X 16. 5"h] Actual Filter Size 19 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,