Agility ProCab 4 Tank Compressed Natural Gas Fuel System w/ TruckWings Automatic Aerodynamic Panels. Mounts Behind Cab. Exterior Dimensions w/ TruckWings Retracted: 113"H x 45"D x 93"W. (Depth Is 31" w/o Truck Wings). CNG Tanks Each 81"L x 27"Dia, 3600 psig, 580L Cylinder Water Volume, 43 DGE. Total Capacity 2320L Cylinder Water Volume, 172 DGE. Tanks Good Until July 2040. LH Panel Is Cut Near Lower Door & Door Is Not Secured To Unit. RH Front Corner Dented.