Freeze Protection Systems. Established in 1959, du Alaska manufactures a range of heating cable, controls and accessories. The company offers a variety of freeze protection, installation, heater placement and finite element analysis services. It provides products under the Arctic Trace brand. Its products are used for freeze protection in water supply applications, septic and liquid tanks, deep wells, sewers, drains and gutters. The company s products are used in petroleum refineries, waste water treatment facilities, food processing plants, storage tanks, instrument lines and enclosures. Visit duAlaska Representative Line sheet http://www.dualaska.com/Line_Sheet.htm .