The 5 gallon ENDO air suspension tank dimensions are: Length: 29.312" Height: 6.625" Diameter: 6.625" Every good air suspension kit should have a high quality air tank to store the air produced by the air pumps. Most air tanks on the market are going to require you to run valves externally, meaning you will have more to deal with during install and more plumbing that will be visible. Our patented ENDO-VT valve integrated air tank provides a cleaner install by having the valves integrated into the air tank. This allows for quicker installs and an overall nicer presentation in your trunk, truck bed, or anywhere else you choose to mount your tank. The ENDO-VT also represents AccuAir’s next generation of solenoid valve technology that includes VFC (variable flow control) in addition to D.O.T. approved fully filtered and rebuildable FFPTC (fully-filtered push-to-connect) fittings.