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Furnace Filters by Size 1 inch
REME HALO AIR PURIFIER
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Whirlpool HEPA Filters and Prefilters
Atomic 24000 Honeywell Compatible Replacement Filter for HEPA Air Purifier
Atomic 1183054K HEPA Replacement Filter Whirlpool Whispure Air Purifier Models AP450 and AP510 Compatible After Market
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The Lennox X6673 is compatible with select air cleaner model numbers listed below:
Trion Air Bear
We have been ordering these filters for a couple of years and think they are very good.