GTC-540-30-DD 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, 30 gallon bonderized steel drum, dolly with handle and tool storage box. It is ideal for soot and powder recovery, and is the recommended vacuum for boiler cleaning. 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