Most Proven Reliable Manual/Electric Roll Tarp Conversions & Electric Hopper Door Openers for Grain Trailers

Bismarck Canvas, Inc. has been manufacturing high-quality, American-made tarp systems and accessories since 1994. Our Pro-Lok® Roll Tarps, Dura-Trap® Electric Hopper Openers, and EXT® Electric Tarp Conversions are built in the USA for long-lasting performance. Based in North Dakota, we proudly deliver durable, innovative tarp solutions with fast nationwide shipping and reliable customer service.

Electric Tarp Conversion Kits

The EXT® Electric Tarp Conversion from Bismarck Canvas, Inc. is built for speed, durability, and efficiency, ensuring seamless tarp operation in any condition. Engineered with heavy-duty materials and precision craftsmanship, the EXT® system reduces wear and extends the life of your tarping system.

Electric Hopper Openers

The Dura-Trap® Electric Hopper Opener from Bismarck Canvas, Inc. delivers power, reliability, and efficiency—making unloading faster and easier than ever. Built with heavy-duty components and precision engineering, Dura-Trap® openers ensure smooth operation and long-lasting performance.

Windshield Pads

The Pro-Shield™ Windshield Pad from Bismarck Canvas, Inc. provides heavy-duty protection against rock chips, cracked windows, debris, and harsh weather. Made with durable, high-quality materials, the protection pads prevent costly windshield damage and keep your equipment ready for the road.

Drill Covers

The Drill Cover from Bismarck Canvas, Inc. is built to protect your drills in adverse weather. It keeps out debris and shields your equipment from harsh sun and tough conditions, ensuring long-lasting performance. Made from durable, weather-resistant materials, it helps extend the life of your drill seeder.

EXT Conversion (Manual to Electric)

Dura-Trap & EXT IN ACTION!

Dura-Trap (Electric Hopper Openers)

Durability streamlined.

Fas-Top Sport | Tonneau Cover

We also build high-quality tonneau covers for pickups; designed, manufactured, and assembled in-house right here in North Dakota. By keeping production under one roof, we ensure every cover meets our standards for durability, fit, and craftsmanship. All at an affordable price for a premium-quality tonneau cover.

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High Quality Fabric

We use very strong and high quality American made fabric.

Great Workmanship

All of our tarps are sewn, heat welded, and reinforced with webbing.

Quick Turnaround

We have a 2-3 day turnaround, and we ship anywhere in the USA & Canada.

From the fields to the bins, let our electric conversion

kits make your job easier this harvest season!

Install Instructions

Bismarck Canvas is a one-stop supplier for your tarp
needs. Replacement tarps, parts and complete kits
are available for a variety of applications. Located in
the heart of North Dakota along I-94, our facility
provides easy access for shipping and receiving.

Ag Roll Tarp Systems & Grain Trailer Replacement Tarps