Premium Allergy Protection “The only window screen that filters particles as small as 20 nanometers – creating an invisible shield against allergens and pollutants.” Discover AllergyGuard™ For millions of allergy sufferers across North America, opening a window has become an act of self-sabotage. Conventional wisdom suggests keeping windows shut and relying on air purifiers and HVAC systems – creating stale, recirculated air environments that may […]
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