Keep your air conditioner and furnace running smoothly with these 18x24x1 MERV 8 Pleated AC Furnace Air Filters. Made in the USA, these filters are designed to capture pollen, dust, dust mites, lint, mold, and pet dander, making them ideal for anyone looking to improve the air quality in their home. These filters are electrostatic, meaning they attract contaminants even before they have a chance to circulate through your air ducts. The pleated design also increases the surface area of the filter, allowing for more contaminants to be captured. With a filter life of 3 months, you can enjoy clean and healthy air all year round. THE HIGHER THE MERV RATING, THE MORE PARTICLES TRAPPED ? Merv 8 rated AC/Furnace filter. Tested and rated according to ASHRAE Standard 52.2 CREATE CLEANER INDOOR AIR AT YOUR HOME OR WORK - Captures up to 76% of common airborne contaminants such as dust, lint, dust mite debris, pollen, pet dander, smoke, bacteria, and mold spores. BETTER PERFORMANCE ? This Enviroflow air filter is 20 times more efficient than ordinary fiberglass filters EASY INSTALL ? Simply remove your old filter, unpack the new one, insert the filter so the arrow on the side of the frame matches air flow direction, and lastly record the date to keep track of when to change