Perfect for smaller systems with a maximum roof area of 115m2 (per downspout). Leaves and debris are continuously and reliably filtered out through a unique two stage cascade filter. Water flow is not altered as rainwater enters the top of the filter and exits the bottom with dirt and debris being discharged out the front. Installed in the lower section of the downspout for easy monitoring and discharge of debris. Filter unit is easily removed for cleaning. Housing and inner parts are made of high quality, recyclable, PE plastic with the filter material made from 550mm stainless steel mesh.