Alera True HEPA Air Purifier Replacement Filter

Alera True HEPA Air Purifier Replacement Filter This filter removes up to 99.97% of microscopic airborne particles. For optimal results, replace filter every 720 hours.Design to fit the Alera® 4-speed HEPA Air Purifier. This True HEPA filter removes up to 99.97% of microscopic airborne particles. For optimal results, replace filter every 720 hours.Design to fit the Alera® 4-speed HEPA Air Purifier. This True HEPA filter removes up to 99.97% of microscopic airborne particles. For optimal results, replace filter every 720 hours.True HEPA filter removes up to 99.97% of microscopic airborne particles.Designed to fit Alera® 4-speed HEPA Air Purifier.Replaceable HEPA filter lasts 720 hours.Easy to install.