The 30-gallon, heavy-duty HEPA Vac is a powerful industrial vacuum cleaner. The smaller-volume drum means that it will fit in tighter spaces and is suited for less frequent or lower-volume applications. Designed to move more material with less wear, it has been engineered to filter contaminants to HEPA requirements in dusty environments requiring frequent cleaning. The vacuum is extremely quiet at 82 dBA (half the noise of electric vacuums), making it suitable for a variety of environments.