Consisting of two removable, molded-plastic, interlocking hoods and a center roll tarp, the Crary Electric Combine Hopper Cover serves to protect the contents of the combine's grain tank from inclement weather, while allowing for additional tank storage capacity and keeping its interior dry when not in use. With the flip of a switch, the roll tarp can be quickly opened and closed. According to the manufacturer, the cover, which fits most makes of combines, is totally waterproof, its components are sturdy yet relatively lightweight, and its hoods and tarp assembly require no tools for set up/taken down. The unit is powered by 12-volt DC motor and control switch mounted just outside the cab.