30" X 8" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE Compatible with Duct 4" + Product Details Size &

+ Product Details Size & Compatibility – The 8" round quadrant volume damper is compatible with duct 8"

+ Product Details Size – Duct end cap is 24" X 6" | 26-gauge galvanized steel end cap

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 24" OR 24" x 26" duct opening (measured at the opening)

30" X 8" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE Compatible with Duct 4" + Product Details Size &+ Product Details Size 30"w X 8"h is the size for the duct opening measurement only, [Outer Dimensions: 32. 5"w X 10. 5"h] Actual Filter Size 29 3 4"w x 7 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,