The Extract-All® SCDD-3450 Downdraft Table is a Heavy-Duty and Powerful Air Cleaning and Dust Collection System that works by drawing contaminants down and away from the operators breathing zone. It features a 99% efficient Self-Cleaning Cartridge filter, hinged side and back shield. Heavy Steel Grating provides an excellent all around work surface. Specialized materials are optional for plasma cutting, scratchless surfaces and non-sparking applications. Modular Design allows our tables to be used individually or in groups, side by side, or back to back, whatever best fits your requirements. If your requirements change, simply add another table or split up your existing ones.