How to tell "standard" early model housing: Chute opening height where food comes out should be approximately less than 1 inch (3/4"). Complete Super Feeder housing with scraper and shaker wires, volume screw, gate, distribution slide, roller and large drive gear and lid as shown on picture. All you will need to do is install your existing feeder bottom floor to it (holds electronics, motor and gear box) , and it's ready to run. Note: A late model housing is also now available with larger chute opening and chute cover.  Everything will fit inside of it the same way as the early model housing.