Moeller Marine 12 Gallon Topside Fuel Tank with Low Profile Occasionally marine fuel tanks need replacement after years in the harsh marine environment. This Moeller Marine Topside Fuel Tank has a 12 gallon capacity and a low profile design. Features Low Perm Certified Manufactured from high-density multi-layer polyethylene with ultraviolet inhibitors. Advanced manufacturing techniques provide the highest quality product components available. Meet the new low permeation standards in place by the