Designed for smaller boats, the 800 GPH pump provides unique mounting features and versatility. 36 variations of mounting. Modular design for easy installation. Nylon impeller design. Stainless steel shaft. Replaceable power module. 12-volt, 4 amps. Height: 4", width: 2 1/2", weight: 4 oz. No switch adapter. Hose: 3/4" diameter. Thru-hull fitting: 3/4" diameter.