Phifer Aluminum Screen for Tiny Insects 48 in. x 100 ft.Phifers aluminum screen for tiny insects is perfect for your windows, doors or screened porch. Our aluminum screen was built to protect against most small insects like gnats, flies and no see ums. The only aluminum screen developed specifically to protect against most 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