Ercon 4 Drums Spill Contzinment Tray is not only Suitable to Store 4 Drums of 250 Kg Each, but It can also be Connected to Each Other Or Kept Together to Form Large Spill Decks for Storage of Large Number of Drums, Can etc. All Spill Trays come with Drainage Outlets and these can be Joned together to form Large Decks and then can be further connected to a Collection Tank.