Safeguard 20-36" Adjustable Window Filter 7" Tall

96% of 100

Safeguard Adjustable Window Filter is 7" tall and adjusts from 20" to 36" wide. The window screen that filters allows allergic people to finally keep their double-hung windows open and enjoy pollen-free air! The Safeguard window filter keeps out dirt and dust, and is 92% effective at keeping out ragweed pollen.  Frame and filter cartridge included.

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MSRP $35.00 Selling Price $27.99
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Safeguard 20-36" Adjustable Window Filter 7" Tall - Style #736, lets allergic people keep their double-hung windows open and enjoy pollen-free air. The Safeguard window filter keeps out dirt and dust, and has been tested 92% efficient at keeping out ragweed pollen. A coated, baffled filter design slows down incoming air to increase filtration efficiency, while reducing outside noise and keeping out wind, rain and snow. This expandable poly-fiber filter fits windows 20" to 36" wide, and seals around the frame for a tight fit. Built to last with molded endcaps, vinyl seals, and a warp-proof, rust-proof aluminum frame. Change filter cartridge every year or when discolored due to particle collection.

The Safeguard 7" Tall, 20‒36" Adjustable Window Filter comes with one (1) filter cartridge.  Replacement filter cartridges sold separately.


  • Unique window filter ideal for people allergic to pollen
  • 92% effective at capturing ragweed pollen
  • Also traps dust, dirt, soot and ash
  • Keeps out wind, rain and snow
  • Long-lasting sturdy construction
  • Easy installation - no assembly required
  • For use in double-hung windows
  • Change filter cartridge once a year, depending on conditions

Filter Cartridge Replacement

Click here to view full instructions for replacing the Filter Cartridge in Safeguard Window Filters.

Click here Certified AFTL Performance Testing for Safeguard Window Filters .


Rated 4.63 out of 5 based on 14 reviews.

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June 1
Works like a charm. Quality product. Fast shipping. Thanks!
April 27
The same applies to what I wrote above.
March 27
the product does not expand the full size specified, so plan accordingly. Other than that, it's a well made product.
June 8
Fast shipping and great quality!
FRESH AIR! I put a small fan near mine. It also allows the window to be open on rainy days. I put a strip of foam above & below mine for a tighter, more stable fit. This is a WONDERFUL product for those of us who hate a stuffy air-tight house. I actually prefer the 7" (no longer available!) it seems more stable in the closed sash window and is easier to "get it right" quickly but the 11" works well too. The 7" is less likely to blow in during strong wind gusts but I bought 2 11" ones and I'm satisfied. (I've sometimes taped them on VERY blustery days) They're not perfect, but I wouldn't want to go through oak pollen season w/o them. I highly recommend them.
Easy to use and install. I live in an apartment near a busy avenue. I would get black soot all over my windows and my floors would get dirty so fast. I would close the windows during the day time when I'm not home. With the filter, I feel much more comfortable now leaving the windows open all day. It is a plus when you don't have to worry about rain getting in. It does reduce air flow but you can use a fan to help.
THIS thing is a blessing. I had the idea and was duct taping a standard high filtration furnace filter into my window, however couldn't close window and once wet needed replacing. This item cures all that. True it does restrict airflow to a degree but a small window fan mounted aft of it cures that. Even without the fan nice fresh air indeed does circulate into the room. It does its job nicely stopping all the pollen and dust. Easy to remove or move to another window, has a nice fat seal all around so it seals nicely. I wish I had one in every window. The next best thing to an open window without the pollen great product!! 110%
I love fresh air and open windows, but my husband has extremely bad allergies. So I have lived with a stuffy house for years. Then I discovered these window screens. We have had them for a few weeks now and they are perfect. I finally have some fresh air! They work as described and stay nice and secure in our windows even with our wind tunnel. It has been pouring here this week and no water had seeped through. I will likely buy more of these.
We appreciate this filtered screen SO MUCH! Fresh air and no pollution, dust AND privacy! :) A wonderful invention. Thank you! We have been using filter screens for many years. Very helpful for us I highly recommend these screens to people.
I can have fresh air!!! I canNOT imagine living without these filters! I have them on all my windows... now I can have fresh air. They do restrict air flow some, as others have said, and you need to buy the replacements at least yearly (they get clogged). Worth every cent. And I can leave my windows open in the rain! I recommend them to everyone.
I can have the window open while they are cutting the grass outside and the smell does not come in and I do not start sneezing or having a runny nose. I love the screens.
Product is made well and better than I expected!
Pro's: Easy to extend, smooth operation, quality construction and great filtration. Con's: For me the air flow was reduced too much but this for some could be a plus.
Sturdy construction. Fits fairly well into window grooves, if it were a fraction thinner it would be a perfect fit. Some of my windows are only 24 inches wide. The filter is doubled up for most of the window. This blocks a quite a bit of air flow. My widows that were wider got much more air flow through. The screens allowed me to enjoy open windows, fresh air and no allergy symptoms. I plan on buying more.