Stick-on Collar Duct with Damper | Galvanized Steel Metal Collar Duct with Damper 30 Gauge | 5" Stick on Collar w/Damper is Compatible with Duct 5" Sheet Metal / Round Duct + Product Details Perfect Fit Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 6" or 6" x 12" duct opening (measured at the opening)

4" X 14" Is The Size For The Duct Opening Measurement Only

+ Product Details Size & Compatibility – The size of the wall angle register boot is 10" X 6" X 5" and it is compatible with duct 5"

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

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Stick on Collar Duct with Damper Galvanized Steel Metal Collar Duct with Damper 30 Gauge 5" Stick on Collar w Damper is Compatible with Duct 5" Sheet Metal Round Duct + Product Details Perfect Fit Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Perfect Fit & Easy Sizing Designed for a 12" x 6" or 6" x 12" duct opening (measured at the opening) 4" X 14" Is The Size For The Duct Opening Measurement Only