6 Inch Furnace Filters

PureFilters carries a wide variety of 6 inch furnace air filters. All of our 6 inch filters are either manufactured here in Canada or sourced directly with the brand manufacturer. The 6 inch furnace filters we carry are the pleated kind, providing a superior level of indoor air quality.

Below, you can see a list of all 6 inch filter sizes/models we currently have listed in our store:

16x20x6 Furnace Filters

Electro-Air M0-1056 – Compatible Air Filter 16x20x6

Electro Air Five Seasons M0-1056 - Furnace Filter 16x20x6 MERV 11 OEM


16x25x6 Furnace Filters

Electro-Air M1-1056 – Compatible Air Filter 16x25x6

Electro Air Five Seasons M1-1056 - Furnace Filters 16x25x6 MERV 11

Generalaire / Reservepro 13415 MERV 11 Furnace Filter 16x25x6

Generalaire / Reservepro 13156 MERV 11 Furnace Filter 16x25x6

Electro Air Five Seasons G1-1056 - Furnace Filters 16x25x6 MERV 14

Generalaire / Reservepro 4366 Furnace Filter 16x25x5 MERV 11


16x27x6 Furnace Filters

Aprilaire 401 / Space-Gard 401 Replacement Filter 16x27x6 MERV 10

Aprilaire 501 Filter | Aprilaire 5000 Filter Media 16x27x6 MERV 10


20x20x6 Furnace Filters

Electro-Air M2-1056 – Compatible Air Filter 20x20x6

Electro Air Five Seasons M2-1056 - Furnace Filters 20x20x6 MERV 11


20x25x6 Furnace Filters

Electro-Air M8-1056 – Compatible Air Filter 20x25x6

Electro Air Five Seasons M8-1056 - Furnace Filters 20x25x6 MERV 11

Generalaire / Reservepro 12758 MERV 11 Furnace Filter 20x25x6

Generalaire / Reservepro 12880 MERV 11 Furnace Filter 20x25x6

Electro Air Five Seasons G8-1056 - Furnace Filters 20x25x6 MERV 14


25x20x6 Furnace Filters

Aprilaire 201 / Space-Gard 201 Replacement Filter 25x20x6 MERV 10

Lennox X5424 - PMAC-20C Replacement Filter 25x20x6 MERV 16


28x17x6 Furnace Filters

Lennox X0444 - PMAC-12C Replacement Filter 28x17x6 MERV 11

Lennox X5425 - PMAC-12C Replacement Filter 28x17x6 MERV 16

6 Inch Furnace Filter MERV Ratings

We offers a range of MERV ratings for 6 inch filters. If you are unsure of which MERV rating is suitable for your home, be sure to check out our MERV Rating Guide. You can also see a quick comparison chart here:

How Often To Change 6 Inch Filters

The frequency of 6 inch filter changes will highly depend on what is inside your home, where you are located and various other factors. We wrote a Filter Change Frequency Guide which will help you decide when it is time to change your furnace filter.

6 Inch Furnace Filter Size

It's important to know the difference between nominal size and actual or exact size. We wrote a Guide for Furnace Filter Sizes, if you are not sure what the size of your 6 inch filter is, we recommend checking it out.

"6 inch" refers to the thickness of the filter. Please see the image below, the third image shows how to measure the thickness of your filter:



Request Custom Size 6 Inch Furnace Filter

If you still cannot find your furnace filter listed on our store, you can always request a custom size filter. Custom size filters can take up to 15 business days to deliver and all custom size filter sales are final (no refunds/exchanges). In order to request a custom size filter and receive a quote for your order, please click on the link below.

Request custom size filter

If you need help finding your exact filter on PureFilters.ca and prefer to speak to someone, please give us a call at 1-888-979-4284 or email us at support@purefilters.ca. We are available Monday to Friday from 9AM to 5PM Eastern Standard Time.