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16x25x5 AIRx DUST Replacement for Lennox X6670 Air Filter - MERV 8, 2-Pack
Lennox X6670 (2 Pack) MERV 11 Replacement Filter (16 x 25 x 5")
X6670 Lennox OEM Merv 11 Filter Media 16"X25"X5" Fits X6660 HCC16-28 Genuine Lennox X6670 (2 X Pack of 2) - Amazon.com
Filterbuy 16x25x5 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1029, Lennox X6670, Carrier, Bryant, & More (Actual Size: 15.75 x 24.75 x 4.38) - Amazon.com
16x25x5 AIRx HEALTH Replacement for Lennox X6670 Air Filter - MERV 13, 4-Pack
Air Purete Filter MERV 11 16x25x5 Actual Size 15-3/4" x 24-3/4" x 4-3/8" replacement filter for Honeywell FC100A1029, Lennox X6670, CASE OF 5 - Amazon.com
Lennox X6670 | Filters | FurnacePartSource.com
16x25x5 AIRx ALLERGY Replacement for Lennox X6670 Air Filter - MERV 11, 2-Pack
AIRX FILTERS WICKED CLEAN AIR. 16x25x5 Air Filter Odor Eliminator Carbon Filter MERV 8 Compatible with Lennox X6670 Furnace Filter 2 Pack - Amazon.com
Filters Fast FF16255X6670M8 Replacement for Lennox X6670 MERV8, 16x25x5 - 2-Pack
Filters Fast FF16255X6670M13 Replacement for Lennox X6670 MERV13, 16x25x5 - 2-Pack