Design, manufacturing, and installation of dust collection systems; dust collectors, filters, cyclones; material handling fans; rotary airlocks; storage bins; self-contained dust collectors; Quick Fit duct system components; air system components including pipe, elbows, branch fittings, angle rings, cut-offs, flexible hose, floor sweeps, slip joints, zipper ducts, high-speed abort gates, back-draft dampers, spark detection & suppression systems, NFPA/OSHA combustible dust compliance. (less)