Leaktight containers for the fuel retention stored in the tank in the event of its breaking or wrong transferring or handling system operation.

They are suitable for simple wall tanks of equal to or less than 1,000 litres.

They are stacked with lateral handles to make easier its transport and handling.

They are made zinc-plated steel plate of 0.8 mm thickness, with non-corrosive treatment

«The storages with capacity not higher than 1,000 litres of Class C product (diesel) do not need retention container. They must have a spill tray with capacity, at least, the 10 per 100 of the tank.» (Spanish "Real Decreto 1523/99")