Also called Keder or bead, boltrope is used to attach a canopy to a trailer and is sewn to the canopy roof. The boltrope is fed into the “C” track along the roof line of the trailer. On a standard setup, the boltrope is sewn to the canopy. For ease of installation, it can be made as a separate piece that zips to the main body of the roof. (See Zippered Boltrope Strip.)