True HEPA filter for LivePure™ Sierra series tall air purifiers. True HEPA filtration is medical grade filtration, and captures up to 99.97% of particles as small as 0.3 microns from the air. HEPA filters are effective at filtering particles including smoke, dust, pollen, pet hair and dander, and mold spores.

Product dimensions: 11 7/8 x 5 1/2 x 1 1/4 inches, 0.4 lbs
Shipping dimensions: 12 x 6 x 1 1/2 inches, 1 lbs

Recommended to replace every 12 months for best results.