I39 Supply is a trailer dealership located just south of Portage, Wisconsin, with more than 200 trailers in stock. Our inventory includes enclosed trailers, equipment trailers, dump, utility, livestock trailers, and more.

Our full-service and warranty department is ready to keep your trailer working, and we’re happy to assist walk-in customers with parts and service needs.

Our in-house graphics department is knowledgeable and experienced in turning trucks and trailers into professional business assets. We can also order the right trailer for your business and brand it in-house, eliminating the need to work with a separate trailer dealer and graphics shop.