No-See-Ums fiberglass is also called a 20x20 mesh. This screen provides amazing protection against sand flies, gnats and other small insects that are common in coastal and low marshy areas. The effectiveness of this screen in keeping mosquitoes away has made it popular in places where tiny insects are prevalent.

Can no-see-ums get through screens?

No-see-ums can pass through a 16-mesh screen, so the best thing is to choose a screen with a large mesh number to get smaller holes to keep insects out. Also, because no-see-ums are so small and are weak fliers, ceiling and window fans can be used at high speeds to keep them out of small areas.

Does no see um screen restrict air flow?

The only aluminum screen developed specifically to protect against tiny insects, this tightly -woven metal wire mesh also provides excellent visibility and air flow. Perfect for windows, doors or screened porch areas where gnats, black flies or no-see-ums are a problem.