25" X 25" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Height_22in Reliable Safety Features – Equipped

Reliable Safety Features – Equipped with an automatic safety switch that can be wired to an alarm system to warn of possible tank overflow

Actual Filter Size – 27 3/4"w x 17 3/4" x 1"

will fit on a pipe that's 1/2" on the "outside" (OD)

As The Hot Air Will Flow Up & Out

25" X 25" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Height_22in Reliable Safety Features – Equipped+ Product Details Size 25"w X 25"h is the size for the duct opening measurement only, [Outer Dimensions: 27. 5"w X 22. 5"h] Actual Filter Size 24 3 4"w x 24 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,