20" X 25" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES tape + Product Details Perfect Fit Product Details Size 14 Material_Anodized Aluminum LR164

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 18" or 18" x 10" duct opening (measured at the opening)

+ Product Details Size - 8"w X 8"h X 2"d (for duct opening measurement only)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 22" OR 22" x 30" duct opening (measured at the opening)

[Outer Dimensions: 27

it is concealed and impenetrable

20" X 25" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER EASY AIR FLOW LINEAR BAR GRILLES tape + Product Details Perfect Fit Product Details Size 14 Material_Anodized Aluminum LR164 + Product Details Perfect Fit & Easy Sizing Designed for a 10" x 18" or 18" x 10" duct opening (measured at the opening) + Product Details Size 8"w X 8"h X 2"d (for duct opening measurement only)