The DEWALT DWV905H-LX 110V 38L H-Class WetDry Dust Extractor. It is essential for professional carpenters, fabricators, plumbers and electricians to keep their workspace free of the harmful particles their work generates. This dust extractor will provide this efficiently and easily. As an H-Class extractor it can tackle dust generated from wood, plaster, cement and concrete effectively but also more harmful carcinogenic and pathogenic particles as well. This model also has dual canister filters which have an auto-clean mechanism to keep them going for longer. Dual Cannister Filters with auto filter clean mechanism maintains unit performance during tough construction applicationsVariable Suction Dial allows user to tailor suction to specific application or tool requirementsLarge 38L Tank Capacity reduces unnecessary unit downtimeHeavy Duty 3mm Polypropylene Head Tank are Impact Drop Resistant For Use In Tough ApplicationsTelescoping handle and large rear wheels allow easy transportation over jobsiteAudible alarm alerts user if a drop in performance occursIPX4 rated