Be sure your HEPA WetDry Vacuum is certified A lot of companies claim to have a HEPA vacuum, but many are not certified, If an EPA inspector walks onto your job site, and your HEPA vacuum does not meet the standards, they can shut you down or slap you with a fine up to $32,500, The HEPA WetDry Vacuum is certified and ideal for renovation contractors who have to comply with EPA regulations covering lead paint removal, The EPA specifies the use of a carpet head with a beater bar so be sure to order the optional HEPA Head carpet head, Its beater bar is powered by the airflow of the vacuum, The Dustless HEPA WetDry Vacuum gives you a distinct advantage by enabling you to switch from dry to wet operation without worrying about getting the valuable HEPA filter wet, A protective bafflewall inside the canister protects the HEPA filter from water, One of the big advantages of the Dustless HEPA WetDry Vacuum is the optional Micro Prefilter that greatly extends the life of the HEPA filter, The Micro Prefilter is an inexpensive disposable filter that captures the vast majority of the dirt and dust before it reaches the more expensive HEPA filter, In fact, the Micro Prefilter captures particles down to , 5 microns, That is remarkably close to the HEPA filter that captures particles down to , 3 microns, The Micro Prefilter also retains its strength when wet, unlike other bag prefilters, which is a huge advantage when switching between dry and wet operation, Wont cough out dust when turned on, 16 gallon capacity, Dimensions: 20L x 25H x 20W, SKU: DTLS024