Rule's LoPro series bilge pumps are specially designed with a low profile. This automatic 900S model features two operating modes. The first one engages the pump when the water level reaches 2" or or 1.3" (user choice), and the second one checks for water by briefly turning on the pump every 2.5 minutes. Fully rotating discharge body swivels up 180°, making the pump easy to install. Tricuspid check valves help prevent backflow. Bilge pump can be mounted horizontally or vertically. 12V DC. 900 GPH open flow at 13.6V. 9.3"L x 2.3"W x 2.3"H. Rotating discharge body for easy installation Valves designed to prevent backflow | LoPro 900 GPH Automatic Bilge Pump