A: Due to its price, this must be a single filter.
A: Unfortunately we have to rely on the retailer to answer this question. While the description looks like it is a 4 pack the other reviews state it is not. If we can help with product questions please connect with our team at 800.388.3458 M-F 8am-5pm CT. Thanks for asking!
A: Hello. This will work in a wall unit as long as the sizes match up correctly with what your system takes. If you have any additional questions or concerns, please connect with us directly at 1-800-388-3458 M-F 8am-4:30pm CT.
A: Hello. The pressure drop for this filter tested at 1025 CFM is a 0.19. The 1900 MPR Filtrete filter is our least restrictive filter we offer across the Filtrete Filter line of products. If you have any additional questions or concerns, please connect with us directly at 1-800-388-3458 M-F 8am-4:30pm CT.
A: Great question! Filtrete(TM) Filters are not classified as High Efficiency Particulate Air (HEPA) filters. A HEPA filter has a capture rate of approximately 99.8%. For a filter to be a true HEPA filter, it would be very restrictive to the airflow. We are not aware of a furnace or air-conditioning filter that is classified as HEPA. They are most often found in clean room environments. If you need any further assistance, please feel free to contact us directly at 1-800-388-3458. We are available Monday through Friday from 8:00AM to 4:30PM CST and mention file number 24785783.
A: We have received many questions about using our Filtrete™ Air Filter material to create face masks. Our filters are designed to be used in HVAC systems, and the filter media has not been tested to be used as a face mask for respiratory protection. Altering any of our 3M Filtrete™ Air Filters is not recommended or supported by 3M or the Filtrete™ Brand. Customer safety is our number one priority. For information on the Coronavirus and recommended protection products, please consult the CDC.