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: 18 1/2 x 6 3/16 x 1 3/16 inches, 0.5 lbs
Shipping dimensions: 19 x 6 1/2 x 1 1/2 inches, 1 lbs

Recommended to replace every 12 months for best results.