10" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES mobile home rv + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - The listed 10" diameter refers specifically to the size of the duct opening

+ Product Details Size - 4"W X 4"H is (for duct opening measurement only)

+ Product Details Size - 8"w X 26"h X 2"d (for duct opening measurement only)

you may now order this galvanized sheet metal end boot for a reasonable price

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 10" or 10" x 6" duct opening (measured at the opening)

10" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER EASY AIRFLOW LINEAR BAR GRILLES mobile home rv + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size The listed 10" diameter refers specifically to the size of the duct opening + Product Details Size 4"W X 4"H is (for duct opening measurement only)