Intended use: Ideal where high brightness and high illumination levels are required such as retail, industrial and warehouse applications. Attributes: Fixtures assembled with snap and screwed together components. Available in a variety of lengths and lamp configurations. Gripper-back design for superior strength and rigidity. Construction: Heavy-duty, 20-guage channel, cold-rolled steel. Sturdy channel cover secured by quarter-turn latch for tool-less access to wireway. Screw-on endplates. Finish: Five-stage iron-phosphate pretreatment ensures superior paint adhesion and rust resistance. Finish is high-gloss baked white polyester. Electrical system: Thermally protected, resetting, Class P, HPF, UL listed, CSA Certified ballast is standard. Magnetic ballast complies with ballast efficiency requirements of U.S. Department of Energy 10CFR Part 430. Ballasts for T12HO rated to start full-wattage lamps at -20°F. CW20 cold-weather option will appear in fixture description. Fixture is suitable for damp locations. AWM, TFN or THHN wire used throughout, rated for required temperatures. Installation: For unit or row installation, suspended mounting. Channel connector furnished standard. Listing: UL Listed to US and Canadian safety standards. Optional: Mexico NOM.