> 90% Dust Arrestance Efficiency per ASHRAE 52.2. Cooking Smells & Stale Odors. Vehicle Exhaust & Petroleum Fumes. Cleaning Compounds, Solvents & Disinfectants.Many Other Unpleasant Odors from Objectionable Sources. Heavy Duty Beverage Board Frame with Water Repellent Adhesive. Moisture Resistant - Pleats Hold Together Even When Wet. No Delaminating, No Excessive Buckling, No Collapsing. Provides Added Strength & Rigidity. Will Not Rack, Warp or Bend Under Most Operating Conditions. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Indoor Air Quality & Fans\Air Filters". The seller is "4qualityair" and is located in this country: US. This item can be shipped to United States.