vivosun 8 inch flexible aluminum ducting for hvac ventilation, 25 ft long air duct hose with 2 clamps, multi-layer dryer vent duct for heating cooling ventilation and exhaust 8" x 25ft silver is up for auction in Tools & Home Improvement. The current bid is $5.50, 81% below the $28.49 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.