22" X 22" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES tool bag you can quickly adjust airflow

you can quickly adjust airflow for year-round comfort

+ Product Details Size – 12"w X 22"h is the size for the duct opening measurement only

+ Product Details Size - 12"w X 12"h Is The Size For The Duct Opening Measurement Only

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 4" duct openings

gymnasiums & restaurants

22" X 22" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES tool bag you can quickly adjust airflow+ Product Details Size 22"w X 22"h is the size for the duct opening measurement only, [Outer Dimensions: 24. 5"w X 24. 5"h] Actual Filter Size 21 3 4"w x 21 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,