Built to last, CEP's heavy duty quartz lights have been designed to endure the harshest of jobsite conditions. All fixtures are either cETLus or cULus listed as portable work lights approved for use in wet locations. The heavy duty portable light stands are made of heavy wall tube steel and have no plastic parts, and the fixtures emit 11000 Lumens of color corrected light and provide the user with much more light efficiency than the traditional imports. The economy quartz lights provide the same degree of Lumens with a different grade assembly.