Stick-on Collar Duct with Damper | Galvanized Steel Metal Collar Duct with Damper 30 Gauge | 4" Stick on Collar w/Damper is Compatible with Duct 4" 18" Round Duct Pipe + Product Details 16"w X

+ Product Details 16"w X 16"h is the size for the drywall opening measurement only

actual front end outer dimensions are approximately 12 5/8" width X 20 5/8" height

+ Product Details Size - 12"w X 8"h X 2"d (for duct opening measurement only)

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Stick-on Collar Duct with Damper | Galvanized Steel Metal Collar Duct with Damper 30 Gauge | 4" Stick on Collar w/Damper is Compatible with Duct 4" 18" Round Duct Pipe + Product Details 16"w X+ Product Details Size The size 30 gauge stick on collar is 4" and it is compatible with duct 4". Design It has the main role in HVAC ducting system. The stick on collar helps you in heating, ventilation, and air conditioning (HVAC) to deliver and remove air. Applications The galvanized steel metal round duct is used to cut into a plenum or rectangular duct to begin a trunk line or branch like runs. Premium Quality Our duct stick on collar with damper