Danner Manufacturing, Inc. Pondmaster Pond-Mag, Magnetic Drive Water Pumps, 500 GPH Pond Pump 18-Foot Cord, #02525 Rigid Pre-filter included Ceramic Shaft 5 year Limited Warranty Operates Submerged or Inline 18' Grounded Power Cord Suitable for medium garden fountains, piped statuary and ponds 500 GPH Maximum Flow with a 10-foot6-inch Shut-off Ceramic shaft Pre-filter included Operates submerged or in-line