Replacement for Lennox 17x26x4" (X6664, X6666)

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Lennox Model X6666 MERV 16 Filter for PCO-12C - 17 x 26 x 4

$115.62 $149.99

In Stock
Ships Today
Est. Delivery By Apr. 26th
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5 stars (4 reviews)
Filter change reminder
2 pack
Lennox Replacement Filter X6664 (75X74) for PCO-12C - 17 x 26 x 4

$83.90 $108.99

Case of 2 Filters, $41.95 each

In Stock
Ships Today
Est. Delivery By Apr. 26th
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5 stars (16 reviews)
Filter change reminder

Save Energy, Change Your Filter

Steve W. said:

"I love the filter change reminder e-mails. I wish I would have known about this sooner."