Box Fan Air Filter MERV 12 DIY Air Purifier

Home Furnace Air Filter MERV 12 HVAC AC Replacement

  • – None –
  • Premium Quality High Efficiency
  • MERV 12
  • Free US FedEx shipping
    Fast 1-3 day delivery on average

This Air Filter
Actual Size: 19 1/2 x 19 1/2 x 3/4 – Box of 6

Filters2Go | USA

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What’s Included

Your chosen quantity of
Nordic Pure MERV 12 Box Fan Filters

Hypoallergenic and antimicrobial pleated electrostatic filter material.

Nominal Size:
Actual Size: 19 1/2 x 19 1/2 x 3/4 (19.5 x 19.5 x 0.75)
Made in the U.S.A.
Free Delivery – USA only

MERV 12 Pleated Filter

Full Product Details

Everyone uses a box fan in the summer. Not everyone realizes that using a box fan also increases the flow of air-borne pollutants. Here is an inexpensive way to filter home air to remove dust, pollen, pet dander, and other particles. Many people with sinus problems, hay fever, or other conditions may find this helpful, especially when the allergy season arrives. Box fan air filters act like a vacuum cleaner for the air. Simply attach the fan air filters to the back of the fan with the enclosed velcro tabs. As the fan draws air through the filters, dust, pollen, lint, and other airborne particles are captured. When the box fan air filters are dirty, simply throw them away and slip on a new air filter. Box fan air filters are not equivalent to the home air filters that substantially filter more. It does filter air rapidly and removes a considerable amount of foreign material from it. Box fan air filters should be considered for asthma and other conditions. Many people cannot afford commercial home air purifiers.

Nordic Pure pleated box fan air filters have a MERV 12 filter media that is treated with a highly specialized antimicrobial agent. It is designed to effectively control microbial growth, such as mold, fungus, mildew, and bacteria, on contact. This capability to control such a wide range of micro-organisms makes the Box Fan Air Filters an excellent frontline barrier in the effort to achieve improved Indoor Air Quality (IAQ). Our filters offer a unique and unparalleled combination of microbial abatement and high-efficiency particulate filtration. Our box fan filter media has a permanent electrostatic charge which will attract and trap the dust and stop it from being blown through your box fan and back into your home or office.

Frequently Asked Questions


The interval between replacing your furnace filter will mainly depend on the air quality of the internal space and external environment. We recommend the below guide to help maintain your appliance and indoor air quality.

It is important to regularly change your furnace air conditioner filters, especially during and after any home improvements for fresh, clean air in your home or office. We recommend that you change your air filter every 30-90 days to maintain maximum efficiency and performance.

Users who have pets and live in dusty or polluted environments like cities will likely need to replace their furnace filter every calendar month.

Users who have no pets and live in low dust / polluted environments will be able to stretch this out to 90 days.

MERV ratings are Minimum Efficiency Reporting Values, or MERVs, report a filter’s ability to capture larger particles between 0.3 and 10 microns (µm).

This value is helpful in comparing the performance of different filters
The rating is derived from a test method developed by the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE). The higher the MERV rating the better the filter is at trapping specific types of particles.

Average Particle Size Efficiency in Microns

MERV Rating      /     Efficiency

1-4      /     3.0 – 10.0 less than 20%

6      /     3.0 – 10.0 49.9%

8      /     3.0 – 10.0 84.9%

10      /     1.0 – 3.0 50% – 64.9%, 3.0 – 10.0 85% or greater

12      /     1.0 – 3.0 80% – 89.9%, 3.0 – 10.0 90% or greater

14      /     0.3 – 1.0 75% – 84%, 1.0 – 3.0 90% or greater

16      /     0.3 – 1.0 75% or greater

All furnace filters require regular replacement to function properly. Follow the manufacturer’s or filter suppliers recommendations on maintenance and replacement.


A furnace filter will help remove pollutants, VOC’s, pollen, dust and other particles from the air in your home. Over time dirt and pollutants start to build up and block the filters ability to clean the air, this is the reason it is important to regularly replace your furnace filter.

– Free Delivery
– 30-day Return Policy
– Global Delivery Service
– Tracking Information stock a range of vacuum, air purifier, car cabin air filters and more. All purchases come with free delivery and a 30-day return policy.
Keep breathing clean air and remember to change your air filter on a regular basis.

How clean is the air in your home?
Pet dander, mold spores, harmful gases and other airborne particles can quickly overcome a household,
potentially leading to bad odors, allergies and sickness.
Find an air purifier filter here at

How clean is the air in your car?
Find a car cabin air filter here at

Does your vacuum still suck like the good old days?
The filter life of most vacuums is 3-6 months.
Find a vacuum filter here at

Why is clean air important?
Don’t listen to some company about what is good and not good for you, listen to the experts –
While it’s easy to see when you need to dust or sweep, it’s harder to know when the air in your home needs cleaning. In fact, the indoor air you breathe can be hazardous to your health without any telltale signs. Indoor air can be even more polluted than the air outdoors. Don’t let the air in your home threaten your family’s health, especially if someone in your family has asthma or another lung disease. Let us show you how to protect them. Get a new filter now @

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Additional information

Weight 4.5 lbs
Dimensions 7 × 21 × 26 in
Filter Quantity



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Delivery & Shipping

Courier Delivering Air Filter Package To Woman At Home

We do our best to process and dispatch all orders as fast as possible. Allow 1 – 4 business days for processing, followed by the following depending on product type.

Furnace & air conditioning filters.
1 – 4 days (FedEx Ground Service)

Vacuum, vehicle & air purifier filters.
2 – 4 weeks for the delivery.