Dust Free Duo-Therm central Air Conditioner -
Airfitness Electrostatic Air Conditioner Filters reduce the level of allergens in your RV.
Washable, reuseable Filter uses static electricity to trap more dust, pollen and other airborne particles than regular filters. Fit perfectly into air conditioner filter compartments. Polypropylene outer shell and polyurethane foam inner filter. USA.