This pneumatic tank is 1350 cubic feet. It has been used daily until the after the first week of 2017. We are downsizing due to the loss of over 50% of our business. This trailer doesn't need anything and is ready to haul. We hauled soda ash so you may need to wash trailer on the inside. Over 75% on all brakes, drums, and tires. The line and tank pressure gauges are working. Complete maintenance folders are available with sale.