The Model GWAE Auto Scrubber self-cleaning hood system cleans both sides of filters in place, along with the inside of exhaust plenums. This eliminates the need for daily removal and cleaning, dramatically reducing operating costs and increasing worker safety. The drastic reduction of grease build-up on filters, ductwork, and fans also decreases fire potential. Features include a 2-in. gravity drain that captures grease from the pitched grease trough and a single control panel that controls multiple hood sections or duct sumps. Tool-less access panels provide easy access for maintenance and inspection and allow for safe removal of filters.