The Walker Exhaust 21286 Quiet-Flow SS Stainless Steel Muffler is engineered to provide superior durability and performance for commercial vehicle fleets. Constructed entirely from corrosion-resistant stainless steel, this muffler offers a longer service life compared to traditional aluminized options. Its internal drainage system effectively reduces moisture accumulation, mitigating the risk of corrosion and extending the component's lifespan. Designed with internal partitions and mechanically joined tubes, the muffler accommodates thermal expansion and contraction, minimizing distortion and maintaining structural integrity under varying temperature conditions. The OE-style louvered tubes and domed heads deliver a premium factory-style sound quality, effectively reducing noise levels and enhancing the driving experience. Acoustic and flow testing validate its design, ensuring consistent performance and reliability. With dimensions of 20.00" in length, 9.00" in width, and 7.00" in height, and an overall length of 24.00", the muffler is designed for easy installation, fitting a range of vehicle applications. This product is backed by Walker's limited lifetime warranty, underscoring its commitment to quality and customer satisfaction.