Stick-on Collar Duct | Galvanized Steel Metal Collar Duct 30-Gauge | 18" is Compatible with 18" Width_26in that will overlap at the

that will overlap at the wall joint

actual front end outer dimensions are approximately 18 5/8" width X 26 5/8" height -

The total outer size of this grille is the listed size

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

Stick-on Collar Duct | Galvanized Steel Metal Collar Duct 30-Gauge | 18" is Compatible with 18" Width_26in that will overlap at the+ Product Details Size Stick on collar is 18" and it is compatible with duct 18". 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