The BlueDri Air Shield 550 (AS-550) can be used by painters, during water/flood restoration, construction, crawlspaces and attics, home repairs, remodels, painting, sewage, mold remediation, fire damage restoration, water damage restoration. For men and women who spend a great deal of time in dusty environments, air quality and related health complications are a constant concern and should be a top priority. The BlueDri Air Shield 550 (AS-550) provides a convenient and effective solution. The Air Shield 550 is equipped with 3 separate filtration stages to protect your health and well-being. Whether you suffer from allergies or are on a dusty job site, this air scrubber is a must-have for environments with contaminated air. The Air Shield 550 has a wide array of features for greater convenience during use. An LED light indicator notifies you when the intake filter should be changed and a variable speed control mechanism allows you to adjust the power and speed at which the filter operates. Some of the other features include a daisy chain-compatible GFCI port and an hour meter display. Each unit is made with an easily stackable design to save space at your job site or shop as it cleans the air. The total weight of the filter is approximately 38 lbs. and it measures roughly 15.25 in. x 24 in. x 23 in., making it an ideal tool for both business and home. The Air Shield 550 will work just as hard as you and your team to create outstanding results at job sites.