The Day Tank UL-142 is not designed to carry the load of a generator or enclosure.The tank meets UL-142 specifications and can be sold in double wall secondary containment, close top diked, and open top.The tank contains a pumping system and a pumping controller to regulate fuel flow to the generator. Other options include float switches, reverse pumps, hand prime pump, and much more. GPC will customize your day tank package to accommodate your specifications.