GTC-540-30 Soot/Powder Recovery Boiler Cleaning Vacuum The GTC-540-30 Heavy-Duty Soot/Powder Recovery Vacuum including filters and 18"-22" diameter drum adapter ring (no drum). It is ideal for soot and powder recovery, and is the recommended vacuum for boiler cleaning. The GTC-540-30 can be used on any standard 30 gallon drum. This Manual is restricted to verified Goodway customers only Follow the directions below to access this manual. Sign-in or register a new account with Goodway.com