MERV 8 is the most recommended level of filtration by industry professionals. Our MERV 8 pleated filters are 30 times more efficient at capturing micro particles than ordinary fiberglass filters. A unique combination of cotton & synthetic fibers gives you the most filtration and the least air resistance. The "W" Shaped Pleats Give You More Filter Surface Thereby Capturing More Dust All Our Filter Are Tested Per ASHRAE-52.2 Standards - MERV 8 - And An Average Arrestance Of 90-94%
Discount code located on inside cover of the PDF catalog.