Pro-Flo 1000 Series reusable air filter offers superior flow capacity, low profile, good filtration, performance benefits and long-term savings. This air cleaner fits carburettors with a 5-1/8" air horn and has an overall height of 3". Inside every Edelbrock Pro-Flo 1000, you'll find our exclusive reticulated urethane foam element. Maintaining Pro-Flo's foam element is simple. Just release the spring clip, remove the element, wash in hot, soapy water, rinse, dry and reassemble. If necessary, replace with element ED1099