20" X 24" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 8" Diameter + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 26" OR 26" x 28" duct opening (measured at the opening)

electrical

No need to worry about complicated setups or lengthy installations – just place it in position

Adjustable minimum speed via internal trimpot

It is compatible with 7" duct

20" X 24" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 8" Diameter + Product Details Perfect Fit+ 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,