FLEXIBLE PVC DUCTING: 5m long flexible ducting for 300mm diameter fan ducting. Applied hard-wearing, flexible vinyl woven polyester with carbon wire spring and adhesive tape. Designed to be super flexible and flame-retardant. Collapses for easy storage D-RING: The flexible duct features D-ring which is used for free hanging. 3 load hooks for easy and stable suspension ADJUSTABLE ROP: The thick rope can be adjusted according to the diameter of the passage to ensure good sealing and allows you to quickly connect the duct hose to any size fitting WEAR-RESISTAN: Wear-strip offers abrasion resistance to ensure the PVC hose can stand up to external wear. Also the strong structure allows the duct to stand up to tough conditions between -28~100 ℃ temperature WIDE APPLICATION: Our hose designed for ventilation applications including duct fans and vent exhausts in factories, basements, farms, chemical, tunnel and automobile manufacturing, ect