Stick-on Collar Duct with Damper | Galvanized Steel Metal Collar Duct with Damper 30 Gauge | 7" Stick on Collar w/Damper is Compatible with Duct 7" 16" Round Duct Pipe This ensures superior performance and 4 X 12 Is CRFG2028 Width_14in

This ensures superior performance and efficiency in any application

+ Product Details Size - 36"w X 22"h is the size for the duct opening measurement only

This versatile diffuser is available in 1-way

High Quality – High-quality

+ Product Details Size – 20"w X 36"h is the size for the duct opening measurement only

Stick on Collar Duct with Damper Galvanized Steel Metal Collar Duct with Damper 30 Gauge 7" Stick on Collar w Damper is Compatible with Duct 7" 16" Round Duct Pipe This ensures superior performance and 4 X 12 Is CRFG2028 Width_14in This ensures superior performance and efficiency in any application + Product Details Size 36"w X 22"h is the size for the duct opening measurement only