If you thought you couldn't install automatic waterers in your barn, think again. This dependable, float controlled model simply hooks up to a standard 3/4 in garden hose to automatically deliver fresh water 24 to 7 in above freezing temperatures. The large 4 gal capacity is perfect for thirsty horses. Includes metal brackets for over the fence or on the wall installation. Molded from impact-resistant polyethylene resin. Operates at pressure between 20 and 50 psi.