Pleated Filters 4"

Electrostatically Charged Fibers Increase Initial Efficiency   *Low Pressure Drop *High Dust Holding Capacity   *Heavy-duty, Moisture Resistant Construction   *Thermally Bonded, 100% Synthetic Fibers   *Media Will Not Support Microbial Growth   *Ideal Upgrade From Regular Pleats, Poly Panels & Disposable Filters   *Excellent Pre-filter or Primary Filter MERV rating of 10, 11, or 13 and should be changed every 30 to 90 days.