Roof curbs are used as roof support structures that the Heating/Cooling Equipment mount on. Curbs rise approximately 13 3/4 inches off the roof surface to keep the equipment clear from water buildup. They are constructed out of 18 gauge galvanized steel and have a 1" X 4" wood runner that is permanently attached to the top of the curb. Designed for use with GPG models.
Roof curbs are used for downflow rooftop applications.