Flex Duct Ball The Flex Duct Ball is a tool designed to keep your whips raised off the bottom of the duct. kim2020-04-21T22:58:30+00:00 Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail Related Posts Replacement and Maintenance for Qunicy Compressor Gallery Replacement and Maintenance for Qunicy Compressor Rods Gallery Rods Y-Box Gallery Y-Box Custom Built For You! Gallery Custom Built For You! Duct Flanges Gallery Duct Flanges