Rhen Marshall operates an online sales division, WholesaleMidwest.com, which is a family-owned and operated company that offers a selection of truck and car parts and related accessories. Operational since 1941, WholesaleMidwest.com provides shipping services and maintains warehouses. It serves customers in the Midwest. WholesaleMidwest.com offers a variety of air refiners, scooter batteries, button cells and dual tire pressure equalization systems. The company also provides products under the Air Refiner, Rayovac and Crossfire brands. WholesaleMidwest.com offers industrial silencers, formed tubes and electric prods. In addition, it provides dome and interior lights from Peterson Manufacturing Company. The company offers a line of convex mirror heads, brackets and clamps.