36" X 6" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE with filter + What Is A MERV

+ What Is A MERV Rating Minimum Efficiency Reporting Value (MERV) is a standard that rates the overall effectiveness of air filters

+ Product Details Size - 4"w X 24"h is the size for the duct opening measurement only

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

643°C - Liquidus Temperature: 1475°F

you can attain the diameter of the vent

36" X 6" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE with filter + What Is A MERV+ Product Details Size 36"w X 6"h is the size for the duct opening measurement only, [Outer Dimensions: 38. 5"w X 8. 5"h] Actual Filter Size 35 3 4"w x 5 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,