Hechuang 2 + 4 Pack True Post Filter Compatible With Holmes aer1 True Pot Filter

Compatible With Holmes Units: Cap531-u, Cap529-u, Hap240, Hap242, Hap412, Hap422, Hap424, Hap706, Hap716, Hap9240, Hap9242, Hap9412, Hap9414, Hap9422, Hap9424compatible With Bionaire Units: Bap260, Bap815, Bap825, Bap9200, Bap9700, Bap520view Larger View Larger Why Purify Air? What About The Air You And Your Family Breathe? Indoor Air May Be Up To 5 Times More Polluted Than Outdoor Air, According To The Epa. Americans Spend An Estimated 90 Percent Of Their Time Indoors. Children And The Elderly Are Especially Sensitive To Air Pollution. Most Pollutants Are Microscopic And Can Easily Pass Through The Nose Or Throat Directly Into The Lungs.