Screw conveyors move materials either horizon-tally, on an incline or vertically. They are used to feed, distribute, collect or mix and can be equipped to either heat or cool while performing this transfer. With the proper cover and gasketing, they are easily made dust or weather tight and rodent proof. Their clean compact design saves valuable space since no return run is required. Screw Conveyors fit in cramped quarters, are simple to support and easy to install and they cost less than most other types of conveyors.