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Honeywell's high-performance Return Grille Media Air
Filter features a special design that allows it to fit in
the same space as a standard 1" return grille, while
offering filtration up to 15 times more effective than a
standard 1" fiberglass furnace filter*.
Honeywell's return grille filter is a perfect fit for most
1" residential return grilles - either ceiling or wall
mount. Filter air flowing through your return to trap
dust, pet dander, pollen, mold spores, bacteria and other
allergens in your home for up to one year without
replacement.
*Relative performance rating based on initial fractional
testing of new filter against 0.3 micron to 0.4 micron air
particles when tested in accordance with ASHRAE standard
52.2.
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