Replacement for Lennox X6670, Plus it's MERV 11 w/ Carbon Filter
I bought these filters as a replacement for the X6670 Lennox 16x25x5 MERV 10 Filter Media that is the OEM filter for our Lennox furnace. Those filters usually go for around $32-33 both online and locally, and I wanted to find something that was a little more economical. These were cheaper, plus they were MERV 11 instead of MERV 10, and they had a carbon mesh filter.
I uploaded two comparison photos of the used Lennox X6670 filter that I removed with one of the new Nordic Pure filters so the differences between them could be seen.
The size of the Nordic Pure is 1/8" larger in both width and height compared to the original Lennox filter. I did not have any trouble inserting the Nordic Pure filter into the slot in the furnace, as I would imagine 0.125" is well within the tolerances for that slot.
I was concerned that going over the MERV 10 rating would restrict airflow, but the Lennox...
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