Roof curbs are used as roof support structures that the Heating/Cooling Equipment mount on. Curbs sit approximately 13 1/4 inches off the roof surface to keep the unit 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 GPH****H41 and GPC****H41 models, this curb provides a downflow application for these models.
Roof curbs are used for downflow rooftop applications.