pollen window screen
Product Description
https://www.qicaiknitting.com/products/prevent-pollen-window-screening-mesh-fabric.html
Filters out ultra-fine dust PM 2.5 and fine dust PM 10. plus yellow dust and pollen, ultra-fine dust and more!
Unlike traditional screens, dust-blocking window screens block most bacteria, fly ash, pollen, hair, and agricultural and airborne dust. This window dust filters form a defensive barrier against entry into the home or office.
They also have excellent filtration efficiency, blocking ultra-fine particles as small as 300 nanometers and allergens.
In comparison, standard window screens only filter particles up to 2,000,000 nanometers in much larger sizes.
These pollen screens have a high porosity of 80-85% = high air permeability for excellent air circulation.
The high-strength triple-layer construction provides superior durability.
These window filters also block 95% of rainwater.
They also block over 90% of UV rays and 50% of infrared rays.
