No-See-Um Screen, sometimes called 20x20 mesh screen is a finer mesh fiberglass to protect against no-see-um, gnats, sand flies, and other tiny insects common in low marshy and coastal areas. Stronger Screen Suitable for Patio, Porch and Pool Enclosures
Charcoal color. Mesh: 20 x 20, Diameter: .013.
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This screen is durable and easy to install. Best application for keeping little fly bugs out of your patio.