TRITON Downspout Top Hat Filter – REM designed the TRITON -TH – DS (Top Hat – Downspout) Filter Series to provide a highly adaptable solution that allows the flexibility to maximize the filter treatment flow rates and pollutant capturing capacity from incoming downspouts. TRITON -TH – DS filters may be utilized in new construction or retrofitted in existing catch basin structures that are used in downspout drainage. They are sized to spec or modified in the field for drains with unusual dimensions and unique frame and grates. Filter Cartridges may be easily removed when servicing. Media strategy may be optimized for specific pollutant concerns.