Nominal Tank Capacity 3640 Litres (800 Gallons) Dimensions (LxWxH) 2588x1369x1219mm 102x54x48 ins WRAS Approved Product. Tank is complete with a Sealed Lid, Screened Air Inlet Vent and 25mm Insulation on the Lid and Sides. Note : Tanks must be mounted on a flat level platform supporting the whole of the base.