18" X 12" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Ceiling + Product Details Size -

+ Product Details Size - 12"w X 22"h is the size for the duct opening measurement only

Cut for precise installation and maximum use - the line finished is 164 ft

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

Please check the measuring guide to ensure a proper fit

18" X 12" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Ceiling + Product Details Size -+ Product Details Size 18"w X 12"h is the size for the duct opening measurement only, [Outer Dimensions: 20. 5"w X 14. 5"h] Actual Filter Size 17 3 4"w x 11 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,