Meet the Donaldson primary air filter, meticulously crafted to meet ISO 5011 standards for exceptional filtration performance. With a length of 6.14 inches, an inside diameter of 2.00 inches, and an outside diameter of 4.25 inches, it's engineered to precise dimensions for a perfect fit. This filter, bearing the trusted Donaldson brand, is designed to deliver reliable air filtration for various applications without making extravagant claims.