24" X 18" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES tool bags + Product Details Size &

+ Product Details Size & Compatibilty - The 16" to 14" round metal pipe reducer & increaser 30 gauge is compatible with duct 16" to 14"

Smooth Surface Edges - Run Your Fingers Across The Surface To Feel The Smoothness

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 10" duct openings

The integral multi-shutter damper with a convenient handle operator ensures that you can easily adjust the air volume

24" X 18" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES tool bags + Product Details Size &+ Product Details Size 24"w X 18"h is the size for the duct opening measurement only, [Outer Dimensions: 26. 5"w X 20. 5"h] Actual Filter Size 23 3 4"w x 17 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,