... is an Mini-HEPA Filter3rd stage consists of 2 Photocatalytic Filters (Titanium Dioxide (TiO2)4th stage comprises a UV ... : Boat Cabins, Yacht Cabins, Auto, Bedroom, Living room, Cookroom, Hospital, Etc..·Filters: Cotton filtering effect early, HEPA Filter, Activated Carbon ... usage UV lamp will last approximately 8 to 10 Years).·Filters Life: Depending upon usage, Cotton filtering, HEPA and Carbon ...