Hoosier HT-1200 Series Air Pressure Tank, p/n HT-1218. 2850 Cubic Inch, 150 PSI. Meets or exceeds SAE J10, FMVSS 121. Original application is military trailer air brake reservoir; could be used as portable air tank or piggyback tank for extra volume. Has 5 ports, can be mounted in almost any position and still have a bottom drain. 12 inch diameter, approx. 29-1/2 inches long. Has mounting brackets welded on. List on these is $118.93 each, 15287 1WH4C