The Coral POLIJET DF downdraft table is an ideal solution for the extraction of dust and fumes generated from local bench top grinding, welding, sanding and finishing operations typically found in the following industries: wood, marble, metalworking, foundries, and more. The Coral POLIJET DF bench top has an open slotted work surface designed to capture and extract all fumes and harmful dust created at the source, thus eliminating any health hazard for the employee performing the above tasks. The Coral POLIJET DF is always operating at peak efficiency thanks to our pneumatic cleaning system. Compressed air stored in an internal tank allows the operator to initiate a back pulse cleaning of the filter cartridges. When the cleaning cycle is initiated, a blast of compressed air is released inside the filter cartridges creating a shock wave that the forces the filter cartridges to release the particles from the surface. The collected solids fall by gravity to a lower collection bin. Clean air is returned to the working environment.