Fleet Engineers' AeroSaver trailer side skirt can reduce fuel consumption by up to seven percent by installing the skirt angled or straight with no additional hardware. It saves space by shipping and storing in three equal length sections and can save manpower by being installed with one person in less time than it takes two people to install other brands, according to the manufacturer. This product is made in the USA from recycled materials and meets the CARB (California Air Resources Board) standalone trailer aerodynamic requirements for the GHG/Smartway rule.