SEAFLO 500GPH Marine Air Conditioning Circulation Pump. Compatible with many Marine AC Systems, including: Dometic ®, Webasto ®, Cruisair ™, Marine Air ™, Koolair ™, March ™ and more! Compatible with Systems up to 24,000 BTU. Available in 115V & 230V. Inlet: 3/4″ FPT. Outlet: 1/2″ MPT. 4 Year Warranty!