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This is a genuine Lennox X6667 for exact fit and function.
Lennox X6667

Lennox X6667 FILTER 21X26X4 MERV 10

$49.47 $56.95

There are 0 in stock.
Condition: New

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52000000
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52161505

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10001404
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10001963
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10001958
10001931
10002021
10002027
10003984

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811412

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