For individuals allergic to pollen, this filter fits between the window and windowsill of double hung windows to trap 96% of pollen while allowing the entry of fresh air into your home. The sturdy, rustproof aluminum frame holds a replaceable filter cartridge. The filter also keeps out insects, rain and wind while minimizing noise. Seven-inch high model adjusts from 20" x 36" wide; eleven-inch high model adjusts from 25" x 44" wide.
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This screen is solidly made. It filters the dirty New York air, but still allows air to come through. I am very pleased with it.
Makes a difference
There is a noticeable reduction in house dust with their use. They are not very noticeable when installed. However, they are difficult to expand to their full 36" width. Might be easier to expand to 36" if they were made slightly wider to avoid misalignment when expanding towards their maximum limits.
Excellent solution to our excess CO2 in the house
We've been ones to seal our home due to on-and-off year-round allergies and didn't realize that our doing this caused CO2 levels to get quite high (we now use a CO2 monitor). Now when it's cool enough we can leave a couple of windows open to get fresh air into the house with minimal allergy symptoms. An added bonus is the privacy from its design. Bought 5 - haven't used them long and seldom all five at a time - but it's useful to have them near the windows they're for. One was a bit warped but easily straightened by hand. Two are for side-open windows. It's best to hold it open to its fullest as you pull the window shut on it. The round gaskets and friction keep it open in the vertical orientation. Obviously there's less breeze through these than standard screens, but opening two or more windows encourages air flow. For more rapid airing out of the home, leave a fan on in front of one window, either aimed toward the window to pull air from another window through the home, or away from it to bring air in from that window and push it out another. Bonus: Mission Allergy had a very nice price when I purchased them!
Works for me!
Sep 17, 2021 | By Pua
Our window sashes slide horizontally--90 degrees from the traditional windows shown in the illustration. But I can make them work for our house, especially windows on the west side where the pollen blows in. I first bought screens of this design a couple of decades ago from another catalog, just to keep the summer rain out and still have moving air. As I have become more allergic to dust mites and pollen over the years, the screens and the replacement filters have become more important to our warm weather house maintenance. I briefly considered the Pollentec option, when one exterior screen needed total replacement after a bad storm. But with these screens, I can take care of 7 windows instead of 2, for less cost.
Great item for allergy sufferers
Sep 17, 2021 | By BJ
Use them all spring and summer to keep pollen out of the bedroom. Love that I can keep windows open and not be bothered. Need to use allergy meds less with them in.