Release Net
A Release Net is a cylindrical "sock" made of netting that is secured over the outlet of a drainage pipe that captures all material larger than the pore size of the net. If the net becomes blocked or full, a mechanism is triggered to release the net from the pipe. The net moves downstream until it reaches the end of a short tether attached to the side of the drain that constricts the net opening and prevents the trapped pollutants from being released.