ONNAO 16FT Flexible Duct Hose PVC Flame Retardant Duct Hosing with S Hook Steel Support for 12IN Utility Blower Exhaust Fan

12in 16ft Flexible PVC Ducting Applied hardwearing flexible vinyl woven polyester with carbon wire spring and adhesive tape smooth inside wall Designed to be super flexible and flameretardant Dshaped Rings Dshaped rings are set for hanging the ducting freely Two stainless steel rings plus 4 Dshaped rings of two meters for one ring Ropes Adjustable Thick ropes can be adjusted to fit the duct mouth size ensuring a goodsealing environment and high woking efficiency Two hose can be spliced to achieve the desired length or cut with professional tools to get short length Reinforced Design Wear resistant professional industrial adhesive tape and thickened high carbon wire spring ensure rings to be practical and durable The strong structure allows the duct to stand up to tough conditions between 22to 212F 30100 temperature Wide Application The flexible heavy duty 12 inch duct designed for ventilation applications includingduct fans and vent exhausts in factories basements farms chemical tunnel automobile manufacturing ect.