[. . . ] Scan the bar code with your smart phone to see a demo video of the Nilfisk CFM 118EXP! A Spotless Reputation with a Guarantee to Prove It! [. . . ] All three machines are CSA certified for use in Class I, Group D, and Class II, Groups E*, F, and G environments. The units are made of 304 stainless steel and feature standard HEPA filtration. · All stainless steel construction including container, filter chamber and trolley · Units feature an ergonomic design, including an easy to remove wheeled-collection container on the 118 EXP and 118/50 EXP · Antistatic filter with large surface area and external filter shaker on the dry-only units guarantee high filtration efficiency and prevents premature clogging · Standard downstream HEPA filtration on all units. HEPA filter retains 99. 97% of particles, down to and including 0. 3 microns. [. . . ] ** Specifications are subject to change without notice. For more information on combustible dust and best housekeeping practices, visit our focus site at www. explosionproof-vacuum. com [. . . ]