10x10x1 1" Pleated Air Filter Merv 8-6 pack by Filters Fast (9.75" x 9.75") Compare to Filtrete Micro Allergen Filters 6 pack These MERV 8 air filters effectivelyreduce pollen, dust, pet dander, and other fibers from your indoor air. Removing these airborne particles can help alleviate allergies and sinus irritation that can cause watery eyes, itchy throat, coughing, and sneezing. These MERV 8 filters contain 14 pleats per linear foot which creates a greater surface area to catch airborne particles. The MERV 8 filter media iselectrostatically charged and constructed with spun micro-fiber that also will not retain moisture, which can lead to microbial growth. These HVAC filters should be changed every 1 to 3 months for optimum performance. Made in the USA