Roll Tarps for Agriculture & Construction Industries... If you're looking for the best in tarp systems, you've come to the right place. Bismarck Canvas, Inc. has been offering leading edge products made with the best materials available since 1994. With products like Pro-Lok® Roll Tarp Systems, Dura-Trap® Electric Hopper Opener and EXT® Electric Tarp Conversion, Bismarck Canvas, Inc.® demonstrates the value in simple modern designs and recognizes the importance of constant advancements. All of the products offered are constructed for years of use. Bismarck Canvas is the one stop supplier for your tarp needs: Replacement tarps, parts and complete kits are available for a variety of roll tarp systems and are regularly shipped throughout the USA. Located in the heart of North Dakota Bismarck Canvas, Inc.'s interstate location (Exit 170) provides easy access for shipping and receiving. A common misconception is that all truck tarp is created equal. FALSE. Actually, a lot of tarp companies are switching over to subpar imported materials, not us though! We use high quality fabric that will last for years. This heavy duty material stays flexible in cold weather. It is UV reisitant and doesn’t delaminate or disintegrate in the sun. Common problem with other materials is wear and tear at the bows and topside of your tarp. It all comes down to high quality American made fabric and that is why Pro-Lok has earned its reputation on being the longest lasting tarp you can buy. Avoid the frustration this time and look for Pro-lok's stamp of quality because we set the standard. Our team is always available to answer any of your questions. Call Now 701-673-3777 or Toll Free 1-800-598-1203.