RS3708: Outside Diameter (5-13/32") / Inside Diameter (3-3/16") / Length (15-15/32") RS3709: Outside Diameter (3-5/16") / Inside Diameter (2-15/32") / Length (14-7/8") RS3708 Replaces: 128781A1, AF25524, P536940, 46662, C14230, SA16090 and A-8516 RS3709 Replaces: 128782A1, AF25521, P536941, 46663, CF99, SA16091 and A-8517 Set of 2 Filters Set of 2 Filters Baldwin engine air intake filter elements protect heavy-duty equipment by preventing airborne dirt and other contaminants from entering the combustion chamber. Radial seal filters utilize a urethane compound to form the molded ends and bond the media pack, which includes the inner and outer metal wrappers, forming a strong, yet flexible package. The heavy-duty radial seal gasket formed from this urethane compound is designed to make servicing easier and more cost effective.