With a standard MERV 8 rating, these air filters - comparable in size to the Honeywell FC100A1037 and FC200E1037 models - help to significantly improve the overall quality of your indoor air. After installation into your HVAC system, these filters will go to work, capturing dirt particles sized between 3 and 10 microns for up to three full months. Proudly made in the USA by Tier1 under the most exacting standards, using the highest quality recycled material when possible. Get the great indoor air you deserve in your home by ordering this two pack of Tier1 air filter replacements, comparable to the Honeywell FC100A1037 and FC200E1037 models, from us online today!