Rain/Pro Lake Irrigation Pump Filter PON-006 is staged with both an outer and inner filter designed for the intake side of a irrigation pump. The PON-006 6″ diameter unit is designed for 0 to 40 gallons per minute flow. Manufactured of heavy duty PVC top and bottom with rigid molded PVC inner and outer filtration walls. Filter is filled with screened rock which allows maximum water flow. The Powder Coated Filter Stand helps keep the filter off the bottom of lake, pond, or river.