Returnsox™-N series/I series

Made of high-strength nano-alloy material, ReturnSox™ utilize exclusively-owned patented internal support frame to maintain the flexible air duct in rectangle shape and return air under negative pressure. Matching with air vents, air dampers, Returnsox™ is a replacement of traditional return air duct with cable suspension system to install on site. According to the material, there are two types: DurkeeSox Returnsox and InsuSox Returnsox.