Our MERV 8 Standard Pleated Filters effectively remove 85% of airborne particles. This filter eliminates allergens such as dust mites, pollen, mold spores, pet dander, dust and smog. Our advanced pleat technology provides less airflow resistance resulting in less pressure drop, which allows air-handling systems to stay cleaner and operate more efficiently. Our MERV 8 Standard Pleated Filters are offered in ASHRAE 52.1 and 52.2 ratings, and are built to withstand rigorous conditions. The electrostatically charged, 100% synthetic graduated density filter media is continuously bonded to a 30-gauge galvanized and corrosion resistant expanded metal support grid. Controlled pleat spacing maximizes the filter media surface area and dust holding capacity. The filter media has an effective open area of 96%, and is resistant to a wide range of chemicals, does not absorb moisture and will not support microbial growth. The enclosure frame is constructed of high wet strength moisture resistant beverage board. The filter media is continuously bonded to the enclosure frame, which helps to prevent dust bypass. The diagonal support members of the frame are bonded to the entering and exiting apexes of each pleat to prevent collapse and filter bowing. Our MERV 8 Standard Pleated Filters are available in 47 various sizes, which will accommodate most HVAC systems.