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16x20x5 MERV 11 Air Filters

Name: 16x20x5 MERV 11 Air Filter
Brand: Filter King
SKU: FK16x20x5-CAR-M13
Price: 48.36 USD
Availability: InStock
Rating: 4.740845 (355 reviews)

Actual size: 15.5 x 19.88 x 4.25 inches

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Filter guide

MERV 8 MERV 11 MERV 13 ODOR ELIMINATOR

Advanced

Deep pleated air filters for whole-house and commercial HVAC systems

Learn more

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16x20x5 air filter description

SKU

FK16x20x5-M11
MERV rating

MERV 11
MPR rating

MPR 1000-1200
FPR rating

FPR 7
Filtration efficiency

95%
Odor eliminator

No
Captured particle size

1-10 microns
Lifespan

6-12 months

What does MERV 11 protect against?

MERV 11 filters remove up to 95% of common particles including fine dust, smoke, and smog particles. These filters reduce allergy symptoms and protect against outdoor air pollution.

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Fast & free shipping

Processed quickly, ships fast, free for all orders
Easy to return/exchange

Return your items within 30 days and get a full refund
All sizes available

Find your perfect fit with our complete size range

Who is the 16x20x5 MERV 11 best for?

MERV 11 air filters are designed for homes with allergies and in some cases, asthma. Those with respiratory illnesses or compromised immune systems may benefit from MERV 11 air filters due to these filters being significantly more powerful than alternative MERV filters at capturing smaller particles, such as MERV 8.

When to replace your 5-inch air filter?

A 5-inch filter offers the longest run time of any size we carry. Even so, your household conditions affect how soon it needs a change.

Asthma or allergies

Every ~6 months

Even with the extra depth, allergy-sensitive households should replace a 5-inch filter about every 6 months.
Pets

Every ~8 months

A 5-inch filter can handle a lot of pet hair before it's due, so most pet owners can go about 8 months between changes.
Young children

Every 8–12 months

In households with young children, plan to change a 5-inch filter every 8 to 12 months for the cleanest air.

What happens if you don’t replace on time?

Your filter catches dust every day, but it can only hold so much. Once it's full, dirty air keeps circulating and your system has to work harder – leading to problems that spread through your whole home.

Higher energy bills

A clogged filter makes your system work much harder to push air through. That extra effort shows up on your energy bill.
Costly system breakdowns

When air can't flow through, your AC can freeze up in summer and your furnace can overheat in winter.
Stuffy, uncomfortable rooms

A dirty filter weakens your system's airflow, so some rooms end up too hot, too cold, or just plain stuffy.

MERV rating comparison

Recommended for

Comparable ratings

Filtration efficiency

Dust mites

10+ microns

Pollen

10-100 microns

Pet dander

5-10 microns

Lint and fabric fibers

10+ microns

Mold spores

3-10 microns

Fine dust

1-3 microns

Smoke particles

0.3-1 micron

Smog and fine particles

0.1-1 micron

Bacteria

0.3-5 microns

Virus carriers

0.3-1 micron

Wildfire smoke

0.4–2.5 microns

Odors and gases

Molecular level

VOCs

Molecular level

Cooking odors

Molecular level

Learn more

Basic air quality,
standard homes

FPR 5,
MPR 600

90% of common particles

MERV 8 filters

Better air quality, homes with allergies, pets

FPR 7,
MPR 1000-1200

95% of common particles

MERV 11 filters

Superior air quality, health concerns, allergies

FPR 10,
MPR 1500-1900

98% of common particles

MERV 13 filters

Odor control, cooking smells, pet areas

FPR 5 + Carbon,
MPR 600 + Odor

90% of common particles

Odor eliminator filters

What makes Filter King so good?

It comes down to using better materials. Click around to see how we build a stronger filter that actually protects your home.

Front beverage board frame

The diagonal straps die-cut into the frame bond to each pleat tip, keeping them evenly spaced so the filter won't bow.

MERV 11 pleated media

Rated to capture up to 95% of common particles, MERV 11 media catches dust mites, pollen, pet dander, and mold spores, as well as fine dust and smoke.

Wire support grid

An expanded wire grid bonds to the media, stopping the pleats from shifting or pulling away under airflow.

Back beverage board frame

The same heavy-duty, moisture-resistant beverage board on the exit side holds its shape and keeps a tight seal in your vent or wall slot.

Activated carbon layer

A layer of activated carbon absorbs odor molecules from cooking, pets, and chemical fumes – catching what the filter media alone can't.

Customer reviews

How to find your air filter size?

Check the label on your current filter or use a tape measure to get the exact length, width, and depth before selecting your size.

Nominal size

Nominal size is what you normally see printed on the label. This is usually a rounded size which is often not the true size of your filter.

Actual size

Actual size is the true size of the air filter, usually written in smaller font below the nominal size.

Measuring

Measure your current air filter or the length, width, and depth of the opening slot to get the actual size. Round it up to the nearest whole inch to get the nominal size.

How to install 16x20x5 air filter?

Installing 16x20x5 air filters couldn't be easier. Just make sure to align the arrow printed on the side with the airflow direction!

1

Remove the air filter from the package
2

Locate the arrow and point it in the direction of the fan
3

Slide the filter in to the slot of the central unit
4

For return grills, insert the filter into the grill, pointing the arrow inwards

Without auto-delivery

Pay full price on every order
Need to remember to reorder every time you run out
Forget to reorder, and a dirty filter can drive up your energy bills.

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Get 5% off every order, automatically
New filters arrive right when you need them
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Frequently asked questions

Frequently Asked Questions (FAQs)

Will a 16x20x5 filter work as well as larger 5-inch filters?

Yes, the 5-inch depth provides strong dust-capture and expanded media area. The performance of the air filter will depend on MERV selection, pleat density, and cabinet sealing. Choose MERV 8/11/13 or MERV 8 carbon based on household needs, environmental factors, and schedules you prefer for replacements.

Can I upgrade from 16x20x1 to 16x20x5 without modifications?

No, upgrading from a 16x20x1 filter to a 16x20x5 air filter requires a media cabinet designed for 5-inch filters. A 1-inch rack is too small for a 5-inch filter, and it is never recommended to bend, cut, or manipulate the filter in order for it to fit properly. Always install a compatible cabinet sized specifically for a 16x20x5 air filter or keep 1-inch filters and change more frequently (such as once a month compared to once every 6 to 12 months). The right sized media cabinet enables a longer lifespan and higher MERV with steadier, more reliable airflow.

What is the actual size of a 16x20x5 air filter?

The actual size of a 16x20x5 air filter is 15.5x19.5x4.75 inches. Nominal sizes are rounded up for convenience. Cabinet tracks are built for the actual dimensions of the filters, which is why it's essential to verify the printed actual size of your current filter frame before ordering a replacement. This ensures the filter will match the cabinet while preventing gaps and air bypass.

Do 16x20x5 filters reduce HVAC noise?

Yes, 16x20x5 filters can reduce HVAC noise by maintaining consistent airflow and reducing system strain. Deeper pleat packs lower pressure rise versus a 1-inch filter, which is a bit more restrictive. Proper sealing and on-time replacements help keep systems running quieter and more efficiently.

Can I find 16x20x5 filters at local hardware stores?

No, these 16x20x5 filters are rarely available at local hardware stores due to this size's specific application. This size serves media cabinets designed for whole-house cleaners, so the selection may be more limited in retail stores. At FilterKing, we keep our filters available consistently with your preferred brand choice. We also offer delivery timing that matches your need for replacements year-round, whether you choose to purchase filters in bulk or prefer a subscription-based solution.

Will a 16x20x5 filter help with seasonal allergies?

Yes, 16x20x5 MERV 11 or MERV 13 filters help with seasonal allergies. Selecting the right MERV is one of the most important decisions you will make for your household. Higher MERV captures more particles, such as dust mites, pollen, and even VOCs (Volatile Organic Compounds). MERV selection matters, which is why comparing your options ahead of time is always recommended.

Do 16x20x5 filters eliminate cooking odors effectively?

MERV 8 Carbon filters are designed as odor eliminators. To absorb odors from smoking, pets, and cooking, MERV 8 carbon is best. Comparing MERV filters is highly advisable to better understand which MERV is right for your household and current furnace setup.

16x20x5 MERV 11 Air Filters

Choose filter quality

Advanced

Select quantity

16x20x5 air filter description

What does MERV 11 protect against?

Choose how to buy

Who is the 16x20x5 MERV 11 best for?

When to replace your 5-inch air filter?

Asthma or allergies

Pets

Young children

What happens if you don’t replace on time?

Higher energy bills

Costly system breakdowns

Stuffy, uncomfortable rooms

MERV rating comparison

What makes Filter King so good?

Front beverage board frame

MERV 8 pleated media

MERV 11 pleated media

MERV 13 pleated media

MERV 8 pleated media

Wire support grid

Back beverage board frame

Activated carbon layer

Customer reviews

How to find your air filter size?

Nominal size

Actual size

Measuring

How to install 16x20x5 air filter?

Set it and forget it with auto-delivery

Without auto-delivery

With auto-delivery (save 5%)

Frequently Asked Questions (FAQs)

Will a 16x20x5 filter work as well as larger 5-inch filters?

Can I upgrade from 16x20x1 to 16x20x5 without modifications?

What is the actual size of a 16x20x5 air filter?

Do 16x20x5 filters reduce HVAC noise?

Can I find 16x20x5 filters at local hardware stores?

Will a 16x20x5 filter help with seasonal allergies?

Do 16x20x5 filters eliminate cooking odors effectively?