Made from approved Glass Reinforced Plastic (GRP) materials, with a smooth internal surface. Externally pigmented for preventing light penetrating into the tank. 1360 Ltr Nominal Capacity (300 Gallons) Go to Tank Size Chart Supplied with: Option for 25, 50, 75 or 100mm Thick Insulated Walls. Insulated Bolted Lid. 600*600mm Access Hatch. Foam Lid sealer. Int Dims (L * W * H): 1220 * 1220 * 915mm. Ext Dims (L * W * H): 1390 * 1390 * 1015mm (Including Lid) Suitable for: Water upto 100 Deg C DT CLASS 3 Solutions Go to Our Solution Selection Page WRAS Approved Product. Usual Delivery of this item is 10-15 working days