Actual size: 15.5 x 23.5 x 3.75 inches
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Check the label on your current filter or use a tape measure to determine the length, width, and thickness. Just make sure you know the difference between nominal and actual size.
Nominal Size: 16x24x4
Actual Size: 15.5x23.5x3.75
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 is the true size of the air filter, usually written in smaller font below the nominal size.
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.
Installing 16x24x4 furnace filter or HVAC air filter is easy. Just make sure to align the arrow printed on the side with the airflow direction!
Remove the air filter from the package
Locate the arrow and point it in the direction of the fan
Slide the filter in to the slot of the central unit
For return grills, insert the filter into the grill, pointing the arrow inwards
Keeping your air filter replacement schedule in mind can be challenging to say the least. Make your life easier with Filter King's auto delivery.
The actual size is 15.5 x 23.5 x 3.75 inches. This sizing allows the filter to easily slide into a media cabinet for a proper seal without forcing it into place.
In most homes, this filter will last 6 to 9 months. Check the filter every 3 to 4 months to determine if you require more frequent replacements.
No. This extra inch may cause cabinet damage, airflow issues, and gaps for airflow bypass.
No. When a system is designed for 4-inch media, the MERV 13 filter does not typically restrict airflow.
Yes. Your system should include a media cabinet or filter rack designed for 4-inch filters.
They are pricier upfront because they use more filter media that lasts longer. Most 4-inch filters provide a lifespan of 6 to 9 months, compared to 1 to 3 months with a 1-inch filter.
No. Vacuuming can damage the filter media and reduce its ability to capture and trap particles.
The 4-inch filter offers much more surface area than a 1-inch filter. This provides increased dust-holding capacity and a longer lifespan.
MERV 8 filters