With a location in Sussex, Wis., 4Front Engineered Solutions is one of the world s leading manufacturers of branded truck and rail loading dock equipment. The company owns the Kelley, Serco, LoadHog, TKO Dock Doors and APS Resource brands. It offers air-powered and hydraulic dock levelers, automatic wheel restraints, lift products and rain sealing systems for the food and beverage industries. 4Front Engineered Solutions is supported by a network of more than 130 distributors. The company provides services to clients in the warehousing, distribution, retail, pulp, paper, pharmaceutical, chemical, plastic, rubber, automotive and government sectors. 4Front Engineered Solutions is affiliated with the Material Handling Industry of America, Loading Dock Equipment Manufacturing and International Organization for Standardization.