Introducing the DuraLite primary air filter, meticulously engineered to excel under the most demanding conditions, particularly in two-and three-cylinder engines. Its vibration-resistant media, crafted from high-quality cellulose, is securely housed in molded ABS plastic, ensuring it remains intact unlike other designs. This filter is a breeze to install, and its durability and reliability are second to none. Plus, it's completely disposable, making it a convenient choice for regular trash pick-up. Rest assured, it meets ISO 5011 standards, ensuring top-tier quality. With a length of 9 inches and an outside diameter of 12.5 inches, it seamlessly integrates into various air cleaning systems. Experience a maximum air flow of 35.4 m3/min (1250 cfm) and a final resistance at FPM of 7.99 Inch H2O.