3 Gallon (12 liter) Air Tank With 6 Ports. Made to hold up to a 225 psi air pressure. Can be used for air suspension systems, air horns that require an on-board air system, and many other universal applications. Made from heavy gauge steel, for indoor and outdoor use. With 6 ports: 4 of 1/8" ports, 2 of 1/4" ports. Compact design and weight. Includes mounting hardware. Tank Dimensions: 23-1/2" Long, 7-1/2" High (with brackets).