Aprilaire Air Cleaner Media 413 Fits Model: 2400, 2140(after upgrade kit) 3410, 4400(with air cleaner control), 2410, 1410, 1610, 3410(without air cleaner control) MERV 13 filter. Also fits Source 1 S1-FM410, S1-FM413, SG413PR  3 Pack Special!