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| Best Seller  | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 15 Air Filters 2 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size . With the 4 and 5 air filters there... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Pleated + Carbon 4 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air conditioner filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size - and then you can be... more | FREE shipping go to store |
| Best Seller  | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement AC Filter MERV 13 + Carbon 2 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air conditioner filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size - and then you can be... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 14 Air Filters 2 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size . With the 4 and 5 air filters there... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement AC Filter MERV 10 + Carbon 1 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air conditioner filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size - and then you can be... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 14 Air Filter 1 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size . With the 4 and 5 air filters there... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Air Filter 1 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size . With the 4 and 5 air filters there... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement AC Filter MERV 14 + Carbon 1 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air conditioner filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size - and then you can be... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filter 1 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size . With the 4 and 5 air filters there... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement AC Filter MERV 14 + Carbon 2 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air conditioner filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size - and then you can be... more | go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement AC Filter MERV 15 + Carbon 1 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air conditioner filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size - and then you can be... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Air Filter 2 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size . With the 4 and 5 air filters there... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement AC Filter MERV 13 + Carbon 1 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air conditioner filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size - and then you can be... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 2 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size . With the 4 and 5 air filters there... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 8 Air Filter 1 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size . With the 4 and 5 air filters there... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Pleated + Carbon 2 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air conditioner filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size - and then you can be... more | go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement AC Filter MERV 15 + Carbon 2 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air conditioner filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size - and then you can be... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 15 Air Filter 1 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size . With the 4 and 5 air filters there... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 13 Air Filter 1 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size . With the 4 and 5 air filters there... more | FREE shipping go to store |
 | Lennox X6673 Healthy Climate Air Purifier 20x25x5 Inch MERV 11 Filter (3 Pack) Keep your air purification system running its best by replacing the filter every 6 months. When it s time to replace the air filter in your Lennox Healthy Climate air purification system trust the Lennox Filter Replacement to keep your air clean clear... more | $131.99 $99.99 FREE shipping go to store |
 | Lennox X6673 Healthy Climate 20x25x5 MERV 11 Box Filter - 2 Pack MERV 16 UPGRADE AVAILABLE Lennox Model X6673 Air Cleaner Filter Media - 20 x 25 x 5 (2-Pack) FEATURES: Factory original BMAC Healthy Climate Media Electrostatically charged disposable media Captures dust mites pollen mold spores pet dander and other... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Pleated + Carbon 1 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air conditioner filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size - and then you can be... more | FREE shipping go to store |
 | Lennox X6673 Healthy Climate Air Purifier 20x25x5 Inch MERV 11 Filter (2 Pack) Help your home breathe better with the Lennox X6673 MERV 11 Furnace Filter. It s easy to install and made with high-quality materials for reliability. This Lennox furnace filter is electrostatically charged to grab onto dust pollen pet dander and other... more | FREE shipping go to store |
 | Lennox Healthy Climate 20x25x5 x6673 MERV 11 Box Filter Lennox Healthy Climate #35 Water Panel Evaporator- # X2661 2-Pack The heart of your whole-house humidifier the Water Panel (also known as humidifier filter water pad evaporator pad) should be changed at least once per heating season. The pad is... more | FREE shipping go to store |
 | The Filterbuy replacement whole house air filter 20x25x5 (actual measurements: 19.88 x 24.75 x 4.38 ) ensures that your furnace air conditioner heat pump or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy... more | FREE shipping go to store |
 | The Filterbuy replacement whole house air filter 20x25x5 (actual measurements: 19.88 x 24.75 x 4.38 ) ensures that your furnace air conditioner heat pump or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filter MERV 8 + Carbon 1 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air conditioner filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size - and then you can be... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filter MERV 8 + Carbon 2 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air conditioner filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size - and then you can be... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 8 Air Filters 2 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size . With the 4 and 5 air filters there... more | FREE shipping go to store |
 | The Filterbuy replacement whole house air filter 20x25x5 (actual measurements: 19.88 x 24.75 x 4.38 ) ensures that your furnace air conditioner heat pump or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy... more | FREE shipping go to store |
 | 20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 13 Air Filters 2 Pack Important Note: Almost ALL furnace filters have a different actual size than the nominal size printed on the air filter. It s best if you measure your air filter for the EXACT size and compare it to our Actual Size . With the 4 and 5 air filters there... more | FREE shipping go to store |
 | Nordic Pure 20x25x5 (4-3/8 Actual Depth) Plus Lennox X6673, X6675 Replacement AC Furnace Air Filter, Nordic Pure MERV 13 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home. It will help eliminate... more | See More Info |
 | Nordic Pure 20x25x5 (4-3/8 Actual Depth) Plus Lennox X6673 Replacement AC Furnace Air Filter, 4 PACK Nordic Pure MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer. This results in less flow restriction and 33% more surface area for cleaner smelling air. It will help... more | See More Info |
 | Nordic Pure 20x25x5 (4-3/8 Actual Depth) MERV 12 Lennox X6673 Replacement AC Furnace Air Filter, 1 P Nordic Pure MERV 12 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites,... more | See More Info |
 | Nordic Pure 20x25x5 (4-3/8 Actual Depth) Lennox X6675 Replacement Plus AC Furnace Air Filter, 1 PACK Nordic Pure 12x24x4 MERV 15 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that will attract and capture most airborne particulates in your home. It will help... more | See More Info |
 | Nordic Pure 20x25x5 (4-3/8 Actual Depth) MERV 10 Lennox X6673 Replacement AC Furnace Air Filter, 2 P Nordic Pure MERV 10 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites,... more | See More Info |
 | Nordic Pure 20x25x5 (4-3/8 Actual Depth) MERV 14 Plus Carbon Lennox X6675 Replacement AC Furnace Air Nordic pure's 5" Lennox x6673_x6675 replacement merv 14 plus carbon air filters are the newest filters made by Lennox with a slightly decreased height and width, but the same ACTUAL depth of 4 3/8". this filter is a new standard size that will fit both... more | See More Info |
 | Nordic Pure 20x25x5 (4-3/8 Actual Depth) Plus Lennox X6673 Replacement AC Furnace Air Filter, 1 PACK Nordic Pure MERV 10 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer. This results in less flow restriction and 33% more surface area for cleaner smelling air. It will help... more | See More Info |
 | Nordic Pure 20x25x5 (4-3/8 Actual Depth) Plus Lennox X6673 Replacement AC Furnace Air Filter, 2 PACK Nordic Pure MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer. This results in less flow restriction and 33% more surface area for cleaner smelling air. It will help... more | See More Info |
 | Nordic Pure 20x25x5 (4-3/8 Actual Depth) MERV 14 Lennox X6675 Replacement AC Furnace Air Filter, 1 P Nordic Pure MERV 14 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites,... more | See More Info |
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