I´m not certain if what you have is what I need. The Ait filter cover is a plastic housing that covers an oval shaped single air filter. The filter itself is about 3 inches wide and about 5 inches long, and about 2 inches in height. Then there´s a single wingnut type long screw in the center that holds it in place. It sounds like you may have individual dome shaped filters. The set-up may have changed between models. Thanks for your response in any case.