14" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES w10h10 designed to stop all types

designed to stop all types of fittings and terminate rectangular duct runs

this stick-on collar with damper efficiently facilitates the delivery and removal of air

+ Product Details Size & Compatibility – The size of sheet metal pipe is 8" round x 24" long

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 24" OR 24" X 14" duct opening (measured at the opening)

14" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES w10h10 designed to stop all types+ Product Details Size 14"w X 20"h is the size for the duct opening measurement only, [Outer Dimensions: 16. 5"w X 22. 5"h] Actual Filter Size 13 3 4"w x 19 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,