16½ x 21½ x 1"

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16.375x21.5x1 AIRx ALLERGY Air Filter, 6-Pack
$17.49 / Filter
$21.86 Save 20%!
6 Pack Selected
$104.94
Ships Free!
16.375x21.5x1 AIRx ALLERGY Air Filter, 12-Pack
$16.49 / Filter
$20.61 Save 20%!
12 Pack Selected
$197.88
Ships Free!
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What Our Customers Have to Say

Robert J. 3 days ago
5
They definitely fit correctly. They usually last about two months. I do a lot of woodworking in the basement and it can get dusty in the same room where the furnace is. I’ve blocked off the slot in the return where the filter slides in with a magnetic sheet and I think that helps. I like having six delivered at once so I don’t have to run out looking for the best deal at Lowe’s or Home Depot.
Wayne T. 4 days ago
5
They always have been and still are fantastic high quality and very reasonably priced with super fast shipping too makes them my choice and recommend to all others too. Thank you very much appreciate all you do to help us.
JoAnn M. 5 days ago
5
Have been purchasing for 10 years very satisfied
Jay S. 6 days ago
5
This is a reorder we have been using the same filter for several years and we're very happy with the quality and performance.