HalenHardy Instant Underflow Dam 28x25

HalenHardy Instant Underflow Oil Spill Dam, Prevent spills from spreading with the quickest way to dam up ditches and small streams. Installs in minutes, with only 2 or 3 people. Flexible material allows it to adapt to most stream and ditch bottoms. No special equipment needed. No filling with water or inflating with air needed. Simply unroll the dam, unfold the upstream flap and let the flow of the stream fill it. No anchoring needed. Just uses the weight of the water to weigh it down to the stream bottom. Underflow holes built into the downstream side, so that you can regulate the flow on the upstream side and keep the spill contained. Multiple units can be attached together to make whatever length you need. Wash and reuse dozens of times. Product Dimensions, 28H x 25. Shipping Dimensions, 18x18x26. Weight, 66 lbs.