Upgrade your Peterbilt 379 or 389 with Wingmaster Stainless Steel Peterbilt Sleeper Rear Corner Filler Panels. These durable panels feature four 4" LEDs and are sold in pairs, providing both style and functionality. Constructed from high-quality stainless steel, these filler panels are designed to fit most Peterbilt 379 and 389 makes and models. Enhance the look of your truck while adding extra visibility and safety on the road with these sleek and practical sleeper rear corner filler panels.