The Honeywell Home MERV 11 Replacement Media Air Filter is a new and sealed product designed for use in air conditioners and furnaces. With a HEPA filtration technology and a filter life of 6-8 months, this pleated filter is effective in maintaining indoor air quality. The filter is portable, air purifier, and features a cardboard filter frame material for easy installation. This model, FC100A1037, is compatible with HVAC systems and is a reliable choice for improving the air in your home.