A once a day feeder! This is the largest model we have. Round just like the other models, and can be used anywhere - in a stall, paddock or outside in the pasture. Does NOT have to go in a corner but fits neatly into one if required. Drain plug for easy clean up or when soaking hay. Holds 4-5 average size biscuits which lasts most horses 24 hours. NOT AVAILABLE WITH A LID/WATER TROUGH and only comes with 3.5" & 4" Restrictor Pans.