Stick-on Collar Duct | Galvanized Steel Metal Collar Duct 30-Gauge | 4" is Compatible with 4" 18" Round Duct Pipe + Product Details Size –

+ Product Details Size – 18" x 20" or 20" x 18" is the size for the duct opening measurement only

+ Product Details Size – Duct end cap is 10" X 6" | 26-gauge galvanized steel end cap

+ Product Details Size - 10"w X 14"h X 2"d (for duct opening measurement only)

boosting your HVAC system's efficiency

Stick-on Collar Duct | Galvanized Steel Metal Collar Duct 30-Gauge | 4" is Compatible with 4" 18" Round Duct Pipe + Product Details Size –+ Product Details Size 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 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 has made of high quality galvanized