Replacement for Lennox 21x26x4" (X6669)

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What Our Customers Have to Say

Tommy Mitchell 1 day ago
5
Good value for the money Great customer support (Dan) Thanks
Lisa Wiley 1 day ago
5
Great product
William Leonard 2 days ago
5
Good product, and the size fits my furnace filter box. Other brands of the same stated dimensions don't, as they are a bit too large. 16 x 25 x 5 seems to be inconsistent among various brands. Yours work well. And your service is excellent. Thanks you!
Stanley Arthur 2 days ago
5
Last 6 months!