You know the cute, clever little replacement air filters for those room air purifiers? The filters that, after two or three replacements, cost as much as the air purifier did? Forget 'em. Just buy your normal three-pack of HEPA furnace filters from the hardware store, cut them down to size, and stuff 'em in the purifiers. Be careful not to cut yourself on the metal ribs, and make sure you get the air flow direction right. I got this tip from an Amazon review of an overpriced mini-filter. I tried it out, and sure enough the air gets cleaned just as well for much cheaper.
-- bruce The dignified don't even enter in the game.
-- The Jam
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