http://www.ductsox.com/products/open-ceiling-architecture/skelecore-fts-0
SkeleCore FTS fabric ductwork by DuctSox was installed at one of Mi-T-M's manufacturing facilities by All Seasons Heating & Cooling. Jeremy Tigges, the installer, found the installation was simple and both faster & less strenuous than installing metal ductwork. He also thought that the fabric ductwork provided superior air dispersion over metal ductwork.
Benefits
• Keeps textile duct round and taut at all times, with or without air pressure.
• Eliminates fabric sagging, drooping, and wrinkles.
• Prevents inflation pop (noise) and disruptive fabric motion at start-up.
• Cylindrical Tensioning Ring allows for up to 5” of fabric take-up per tensioned section.
• All the benefits of textile ducting including uniform air dispersion, versatile airflow designs, lightweight, reduced installation times, and fabrics that are non-condensating, non-corrosive, and launderable
• Up to a 20 year warranty.
http://www.ductsox.com/products/open-ceiling-architecture/skelecore-fts-0