This duluxe insulation jacket is ideal for any type of Coffin cold water tank. This will help prevent freezing during the winter and help prevent heating up during the summer. It is available in different sizes to suits up with the requirement of your Tank. Capacity Width Height Depth 25 Gallons 1120mm 395mm 490mm 40 Gallons 1562mm 495mm 457mm 50 Gallons 1420mm 490mm 530mm 100 Gallons 1790mm 590mm 644mm