The DraftMax Advance is a workbench that provides extraction and filtration for welding and grinding applications. The DraftMax Advance features a work grid, a three-stage pre filtration system for optimum spark arresting and two self-cleaning main filter cartridges. Both pre and main filters have pull-out dust drawers underneath. A Magnehelic gauge on the control panel indicates when the automatic filter cleaning system needs to be switched on. The filter cartridges are individually cleaned from the inside by compressed airshots.