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FiltersFast MERV 13 4" Furnace Filter - 3-Pack


FiltersFast MERV 13 4" Furnace Filter - 3-Pack
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Only $28.32 per filter
Retail: $99.99 /ea
You Save: 15%
As low as
Retail: $99.99
You Save: 15%

4 MERV 13 Air Filter Sizes :

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Product Information

The FiltersFast 4-inch Air Filters (FFM136) have a MERV 13 rating and are useful in a variety of settings, including homes, offices, and industrial sites. The MERV (Minimum Efficiency Reporting value) rating explains the efficiency of your filter (a higher MERV rating means a more efficient filter). Standard fiberglass spun filters that you find locally oftentimes have MERV ratings of 1 or 2 and can lead to lower quality air flow at a higher cost. Not only will an air filter with a higher MERV rating increase the efficiency of your heating and cooling system, but you'll enjoy its benefits for a long time.

These MERV 13 filters effectively reduce pollen, dust, pet dander, mold spores, and dust mites, as well as bacteria, smoke, smog, and other allergens. The higher quality construction from these 4 inch filters benefits health and respiration, including alleviating problems with allergies and sinus irritation that might lead to itchy throat, watery eyes, coughing, and sneezing. 4 inch air filters are also more effective than thinner filters because their larger surface areas more much durable.

FiltersFast air filters are affordable without sacrificing quality. These HVAC air filters arrive in a variety of sizes to meet your air quality needs and are quite economical. Not to mention they are a cost effective upgrade from simple poly pleated or fiberglass filters.

FiltersFast FFM136 Specifications:

  • 4 inch filters
  • MERV 13 rating
  • Includes 3 FFM136 4-Inch HVAC filters
  • Replace every 6 to 12 months
  • Greater surface area than smaller filters
  • Reduces airborne contaminants for cleaner air
  • Note: These filters do not contain fiberglass.
  • FFM13 Air Filter - MERV 13 - Specification Data Sheet

The FiltersFast FFM136 reduces the following airborne contaminants:

  • Bacteria
  • Pet dander
  • Pollen and dust
  • Smoke and smog
  • Mold spores and dust mites

The FiltersFast M13 Air Filters are available in the following sizes:  

Nominal Size                                  Actual Size

12X24X4                                 11 3/8 x 23 3/8 x 3 1/2

16x20X4                                 15 1/2 x 19 1/2 x 3 5/8

16X25X4                                 15 1/2 x 24 1/2 x 3 9/16

18X24X4                                 17 1/2 x 23 1/2 x 3 1/2

20X20X4                                 19 1/2 x 19 1/2 x 3 1/2

20X24X4                                 19 3/8 x 23 3/8 x 3 1/2

20X25X4                                 19 3/8 x 24 3/8 x 3 5/8

24X24X4                                 23 5/16 x 23 5/16 x 3 5/8

25X29X4                                 24 1/2 x 28 1/2 x 3 1/2

We can make any size filter! Click here if you don't see your size! NOTE: Custom made air filters do not come individually wrapped.

Prices listed are for a 3-pack of filters. For most homes, this is a year's supply -- and at a GREAT value!

Please note that FiltersFast Air Filters sizes listed are nominal sizes. The actual size of the filter will be smaller than indicated. For example, if you select a 25x25x1 air filter the actual size of the air filter you will receive will be 24.75x24.75x.75. Listing nominal size instead of actual size is an industry standard for most air filter brands so if your current filter says 25x25x1 in most cases this will be a nominal size. In some older homes, and in other cases you may require the actual size. If you require the actual size you will need to place a custom order with a representative. If you are unsure whether you need actual or nominal size simply measure your air filter before placing your order.

The chart below will show you what you can remove with a MERV 8 and MERV 11 air filter.


Customer Reviews:

Total Reviews: 6 | Average Rating: 5.0 / 5.0

Very satisfied, the old saying " service is king" .

Collected by

Really like how fast I received the filters. Being able to buy 3 at a time allowed me to have enough filters for at least one year! Thank you!

Collected by

Just what I ordered, delivered quickly

Collected by

These filters are extremely affordable and basically the same as in a big box store

Collected by

The Filter Fast filters are a great value.

Collected by

UPS destroyed shipping box and 3 filters. Sent a picture and customer service sent me a new box with no hassles and didn' t have me pay for the shipping a second time. Filters Fast is #1 in my book and I highly recommend them. Great prices, great service and get your filters fast.

Collected by

" I just received my filters - thank you for the excellent work that you guys do! I'm a very happy customer. " - Mike, San Marcos, TX
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