Roof Curb & Storm Collar

Our roof curb and storm collar kits are used for flashing roof penetrations for round ductwork. The roof curb is installed over the opening cut in the roof and underneath the roof sheeting. The storm collar is installed around the ductwork and prevents rain for entering between the roof curb and ductwork. Constructed from galvanized steel for superior corrosion resistance. Available in a wide range of standard diameters. Custom diameters are also available.