Enhance your air filtration system with the DuraLite primary air filter, designed to excel under challenging conditions, especially in two-and three-cylinder engines. The vibration-resistant cellulose media is securely enclosed in robust ABS plastic, ensuring it won't deteriorate like other designs. Its installation is quick and hassle-free, making it a durable and reliable choice for your air filtration needs. When it's time for a replacement, it's completely disposable and suitable for regular trash disposal. This filter complies with ISO 5011 standards, assuring you of its quality. With a compact 4-inch length and an outside diameter of 6.5 inches, it easily integrates into various air cleaning systems. Experience a maximum air flow of 4 m3/min (141 cfm) and a final resistance at FPM of 7.99 Inch H2O.