Open Your Windows And Get Fresh Air Without Irritating Pollen
Finally, a window screen filter that lets allergic people keep their windows open and enjoy pollen-free air. It's been tested at 92% efficiency in keeping out ragweed pollen. Even in inclement weather, the Safeguard Window Screen Filter provides fresh air while it also reduces outside noise. Warp-proof and rust-proof aluminum frame ventilator expands to fit your window and seals around the frame to provide a tight fit. The filter cartridge is replaceable and should be changed when it becomes discolored due to particle collection. NOTES: For severe mold allergies, keep windows closed and use a True HEPA air cleaner. It is helpful to keep track of filter replacements for your records.
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