mbeat® Air Purifer HEPA Replacement Filter Specifications Filter_ Consisting of_ Fine Preliminary Filter Layer + H13 HEPA Filter + Activated Carbon Layer Filter Lifespan_ Approximate 6-8 months Product Size_ 162mm × 162mm × 172mm Product Weight_ 350g Package Size_ 167mm × 167mm × 180mm Package Weight_ 475g Package Contents_ 1 × True HEPA H13 Filter *Indoor use only.