... surfaces from 900mmx 750to 1800x 750, and are available with automatic self cleaning filters. Typical applicationsinclude welding smoke, metal grinding ... , odour control from glueing and painting, plasmacutting, batching & weighing, soldering, as well as finishing processes ( i.e. buffing andpolishing). All ... and federal clean air requirements. downdraft table use for automatic pluse cleaning