Baldwin PA5418 Channel Flow Secondary Air Filter Industrial Air Filtration Element Baldwin PA4704 Channel Flow Air Secondary Filter Combustion Chamber Protection Air Filter Element. Height, 2 5/16. Length, 2 5/16. Outside Dia. 7 1/2. Product Details. Special Features: Channel Flow Safety Air Element with Pull Handle... The high efficiency media with straight-through air path ensures optimal flow in a compact size. PA5505 - Baldwin Air Filter | Old Farts Parts Baldwin channel flow air filter elements ensure proper equipment function by preventing airborne contaminants from reaching the combustion chamber , 58., 7 mm height , Air filter PA5515