PowerThrust Cleaning... Home Quick quote Why Q-Sox Why Fabric Ducts Q-Sox Products Featured Installation About Us Contact Us Text Size Fabric Duct Systems, Inc. 952-278-7769... PowerThrust Cleaning Instructions Cleaning Instructions for 300D Polyester or 1500D Polyethylene Fabric Air Diffusers. For a PDF version CLICK HERE. Product Menu Suspension...: (952) 252-7900 Mailing Address: Fabric Duct Systems, Inc.1127 Riverwood DriveBurnsville, MN 55337-1501 USA Email: This email address is being protected from spambots. You need JavaScript enabled to view it. Q-SOX fabric ducts are Engineered and Manufactured in the U.S.A. ...