A pack contains 2 filters. Life expectancy of the filter: 12 months. Compatible with the Honeywell HPA060E air purifier. Captures up to 99.97% of airborne particles at 0.3 microns. Golden standard for people with allergies, hay fever, asthma. Helps you breathe with confidence. HEPA filter technology. Size H12.2, W25.6, D8cm.