Air Purifier Photo Catalytic Titanium Oxide Filter. Fits MANY purifiers (see description) Filter dimensions: 6 7/8" x 6 1/16" x 3/8" (17.6cm x 15.4cm x 1cm) Ecoquest, Rocky Mountain, Green Air, Mammoth Air, Living Fresh, New Comfort, Aerial, Alpine, Atlas, Best Choice, Fresh Air, MicroLux, Zen Living, OION.. May fit many other air purification machines depending on the filter dimensions. Made by GoodVac Please compare the dimensions of this filter to yours before purchasing.