18" X 36" Or 36" X 18" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 19.75 X 37.75] 18in diameter + Product Details 14" x Suitable for all AC 8in diameter 12125SDCLNGBX

+ Product Details 14" x 24" x 1" replacement air filters for your furnace

+ Product Details Size & Compatibility – The size of the side round ceiling box is 10" X 10" X 8" and it is compatible with duct 8"

The stick-on collar helps you in heating

providing maximum flexibility

18" X 36" Or 36" X 18" Heavy Duty Floor Grille Fixed Blades Air Grille Brown [Outer Dimensions: 19.75 X 37.75] 18in diameter + Product Details 14" x Suitable for all AC 8in diameter 12125SDCLNGBX + Product Details 14" x 24" x 1" replacement air filters for your furnace + Product Details Size & Compatibility – The size of the side round ceiling box is 10" X 10" X 8" and it is compatible with duct 8"