Compatible with Holmes Units: CAP531-U, CAP529-U, HAP240, HAP242, HAP412, HAP422, HAP424, HAP706, HAP716, HAP9240, HAP9242, HAP9412, HAP9414, HAP9422, HAP9424 | Compatible with Bionaire Units: BAP260, BAP815, BAP825, BAP9200, BAP9700, BAP520 | Replaces A Filter, D Filter, K Filter | Package Include 2 Allergen Remover True HEPA Filter + 4 Carbon Booster Filter