Established in 2004, Knight Refrigerated offers a range of temperature-controlled transportation services. The company provides refrigerated service centers in the states of Idaho, Wisconsin and Tennessee. Knight Refrigerated maintains a fleet of engineers, tractors, cabs and trailers. The company has an online store that offers a variety of apparel and accessories, such as T-shirts, hats, jackets, mugs and locks. Knight Refrigerated is a part of Knight Transportation, which is operational for more than 10 years. Knight Transportation runs a fleet of over 3,600 tractors and nearly 8,500 trailers. The company also operates Knight Brokerage, which was established in 2005.