12" X 18" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Brown + Product Description Upgrade your

+ Product Description Upgrade your HVAC system with our heavy-duty

and centralized air ducted units

+Product Details Size – 4"h x 14"w is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 12" OR 12" x 22" duct opening (measured at the opening)

+ Product Details 12" x 18" x 1" replacement air filters for your furnace

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