Nispira 3-in-1 premium HEPA filter replacement compatible with air purifier model TT-AP001. Filter size dimension: 5.91 x 5.91 x 4.33 inches. Suggest to replace every 6 months or depending on the usage. Quality meets or exceeds leading national brands. 2 Filters included. Nispira 3-in-1 premium HEPA filter replacement compatible with air purifier model TT-AP001 HEPA filter removes up to 99.97 percent of airborne particles as small as 0.3 microns. Activated carbon removes odors caused by pets, cooking and chemical VOCs 2 Filters included. Filter size dimension: 5.91 x 5.91 x 4.33 inches This is not an OEM product. Suggested to replace every 6 months or depending on the usage. Quality meets or exceeds leading national brands UPC 810701035511 Brand Name Nispira Unit Count 2.0 Count Item Weight 0.41 Kilograms Manufacturer Nispira Model Number HBTTAP001 Material Type Activated Carbon, Polypropylene Product Grade new Item Type Name Air Filter Replacement Number of Items 2 Compatible Devices Air Purifier Included Components Activated Carbon Item Dimensions L x W x Thickness 5.91 L x 5.91 W x 4.33 Th