PollenTec&uml; Clean Air Window Screen (36'' x 10`) - 2 Pack FILTER YOUR AIR WITH THE CLEAN AIR WINDOW SCREEN FROM POLLENTEC The Clean Air Window Screen by PollenTec is a one of a kind solution. Keeps pollen, dust, dirt & exhaust soot out of your home or business. Save ENERGY & have a cleaner house. Capable of filtering out even pollens, down to the micron level. Dust you can't even see is kept out. Certified by the European Center for Allergy Research Foundation ECARF. Tough & durable screens, Excellent Visibility and air flow, Easy to Install & Maintain.