These poultry feeders are used in the base of drums to make low cost higher capacity chicken feeders. The feed pan is designed in two parts, and is intended to fit on a flat surface. A 70mm hole is cut into the base of the drum, and the feeder is screwed into place. The front edge has a slot so that any moisture drains away from the edge of the feeder. For example, it can be screwed onto top a plastic 60 litre drum which has tapered sides. Mount your drum or Emperor Range feeder in such a way that the lip of the poultry feeder feed is at your birds eye height.