12" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 13.75] Compatible with Duct 10" + Product Details Size – 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size – The size of 8" straight saddle stick on take-off is 12"/14" and it is compatible with duct 8"

+ Product Details Size – 30"w X 8"h is the size for the duct opening measurement only

This simple adjustment reduces HVAC strain

These grilles and registers give you an extra measure of quality that are

75"H – fits a 14" X 6" duct opening

12" X 20" Heavy Duty Floor Grille Fixed Blades Air Grille Brown [Outer Dimensions: 21.75 X 13.75] Compatible with Duct 10" + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – The size of 8" straight saddle stick on take off is 12" 14" and it is compatible with duct 8" + Product Details Size – 30"w X 8"h is the size for the duct opening measurement only