20" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Insulated Line Set if your hole is 20"

if your hole is 20" wide by 14" tall

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

+ Product Details Size - 30"w X 20"h is the size for the duct opening measurement only

Installation Location – Sidewall or ceiling

20" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Insulated Line Set if your hole is 20"+ Product Details Size 20"w X 20"h is the size for the duct opening measurement only, [Outer Dimensions: 22. 5"w X 22. 5"h] Actual Filter Size 19 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,