Our 8.5mm PVC Sewable Flange Rail is a flexible keder track, with a 3/4" flap that is ideal for fabric-to-fabric connections. This track is most commonly used for unique applications that require easy-of-use and quick installation, and is great for industries like marine, soft vehicle covers, tent and entertainment. It is also ultraviolet (UV) treated. Standard rail length is 7'9”. This rail accepts 6 - 8.5mm keder. Call (888) 727-7050 or Contact Us for a Quote on purchase and bulk options