State Trailer RV & Outdoor Supply Idaho Falls Idaho is the Idaho Falls RV supplies & Idaho Falls trailer supplies big box supplier of everything you want or need. We stock more than 15,000 RV supplies, trailer supplies, and camping supplies, and since 1926. We have more than fifteen thousand parts in stock at each of our four stores in Idaho Falls Idaho, Pocatello Idaho, Ogden Utah, and Salt Lake City Utah. We also install many of the RV and trailer supplies we sell. We offer RV coach service and repair in Idaho Falls, Pocatello, Ogden, and Salt Lake City. Not only do we offer more selection than anyone else; we do all we can to service and solve your RV & Trailer needs before a problem occurs. Our customer service specialists are here to answer your RV Supply and Trailer Supply questions and help you find what you want.