Feature●Replaceable oil-only absorbent pillows are easy to change and can be rotated for maximum life●55-Gallon drum filter handles filtration of up to 8 gallons of liquid per minute●Durable polyethylene drum wont rust or corrode●Outflow pipe accepts hose connection for easy draining of filtered waterDescription Pour-through filters use replaceable absorbents and gravity for easy separation of oil from water. Unit separates oil from water through gravity; simply pour liquid into the filter and filtered water flows out of drain