Maximize your truck's aesthetics with the Aluminum Sleeper Extender Lower, designed specifically for Peterbilt Unibilt models including the 357, 375, 377, 378, and 379 from 1994 to 2007. This quality aftermarket part is precision-engineered to replace OE number 29-01995L, ensuring a perfect fit for your truck's sleeper compartment. Made from aluminum, it offers robust durability while being lightweight. The extender comes pre-drilled for easy installation and matches the thickness of original equipment, making upgrades seamless. Choose betweenthe driver's and passenger's side, this sleeper extender not only enhances the look of your vehicle but also extends the aesthetics of the sleeper compartment. Each extender is sold individually and comes with a warranty against defects in workmanship and materials. The simple installation process means you can quickly transform your truck without extensive downtime.