Safeguard Window Filter

Keeps out wind, rain, and snow Built to last with molded endcaps, vinyl seals, and warp-proof rust-proof frame Easy installation – no assembly required For use in double-hung windows Change filter cartridge once a year, depending on conditions Safeguard Window Filters feature patented triple-filtering air baffles, which allow only clean fresh air to enter. Our window filters are safe to use in any season since they aren’t affected by rain, snow, or high winds. Its sturdy aluminum frame makes it easy to install in any double-hung casement window. The small Window Filter is 7″ high and adjusts to fit any window 20″ to 36″ wide. The large Window Filter is 11″ high and fits any window 24″ to 44″ wide.