Four rainbarrels are "daisy chained" together on the side of this garage. The water comes in at the top of the barrel on the far left, pouring onto a screened lid. All the barrels are connected together at the bottom with a 1 inch vinyl tube so they will fill up simultaneously. The first barrel has an overflow at the top, and has a hose connection at the bottom. Each barrel is strapped to the wall for safety with metal strapping.