20" X 24" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Color_R-4.2 Yellow 643°C - Liquidus Temperature: 1475°F

643°C - Liquidus Temperature: 1475°F

actual front end outer dimensions are 25" width X 25" height

+ Product Details Size & Compatibility – The size of galvanized sheet metal straight floor boot is 14" X 4" X 8"

Actual Front End Outer Dimensions Are 31

20" X 24" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Color_R-4.2 Yellow 643°C - Liquidus Temperature: 1475°F+ Product Details Size 20"w X 24"h is the size for the duct opening measurement only, [Outer Dimensions: 22. 5"w X 26. 5"h] Actual Filter Size 19 3 4"w x 23 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,