Our 9mm. Double Rail is aluminum keder rail, featuring a tough clear anodized finish, to protect against oxidation in the harshest indoor/outdoor conditions. Standard rail length is 196.85” (5 m.), can be cut per customer request.  This double keder rail accepts 7.5 - 11 mm. keder. Call (888) 727-7050 or Contact Us for a Quote on purchase and bulk options