Stick-on Collar Duct | Galvanized Steel Metal Collar Duct 30-Gauge | 6" is Compatible with 6" 4" Diameter + Product Details Size - 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size - 12"w X 30"h is the size for the duct opening measurement only

+ Product Details Size – 36"w X 8"h is the size for the duct opening measurement only

+ Product Description Upgrade your HVAC system with our 8" Round Air Vent Supply Grille

Assembeled Before Powder Coat Paint

Premium Quality – Our straight round stack boot is made of high-quality galvanized steel metal for durability and rust prevention

Stick on Collar Duct Galvanized Steel Metal Collar Duct 30 Gauge 6" is Compatible with 6" 4" Diameter + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 12"w X 30"h is the size for the duct opening measurement only + Product Details Size – 36"w X 8"h is the size for the duct opening measurement only