Measuring Length and Width (L x W). (If your filter is not a square, the smallest measurement goes first).
Measure the thickness (Depth) of your filter from front to back.
Put Your measurements together (L x W x D).
A filter’s true dimensions.
Example: 19.75” x 19.75” x 1”
Rounded numbers used by manufacturers.
Example 20” x 20” x 1”
View Detailed InstructionsThe Aerostar 16x28x6 replacement air filter for the Aprilaire 2400 Air System is the perfect size replacement for the Aprilaire Model 401 furnace and air filters. Designed for residential use and available in multiple filtration levels, these air filters deliver cleaner air throughout your home with less frequent filter changing than standard filters.
This whole house air filter is designed for residential use. By providing cleaner air, this filter reduces the risk of allergens in the home. It is effective at capturing particles like dust, pollen and mold spores from the air passing through the filter. It is also designed to be effective at attracting and capturing microscopic particles that can carry bacteria and viruses. This filter lasts for up to 12 months before needing replacement.
Replaces brand and part number:
AprilAire® is a trademark owned by Research Products Corporation. The seller of this product is not affiliated with or endorsed by Research Products Corporation.
Actual Dimensions:
15 3/8� x 27� x 6�
MERV ratings let you know the efficiency and level of filtration that an air filter can handle under normal circumstances. The higher the MERV rating, the finer the particles are that are filtered our of the air in your home. Many air filter retailers use MERV or a similar rating to rate their air filters.
MERV Rating is the primary rating system used in the industry, both domestically and internationally. Established by the American Society of Heating, Refrigerating, and Air Conditioning Engineers, MERV rates a filter’s ability to capture and hold particles and pollutants.
MPR Rating is a rating system developed by 3M. It rates the manufacturer’s Filtrete product line and their ability to capture airborne particles smaller than 1 micron.
FPR Rating is a rating system developed by The Home Depot for brands sold through their stores, including Honeywell. It utilizes a color code and number scale (4 to 10) that closely resembles the MERV rating.
Overall rating: 5.0 / 5 from 7 reviews.
Review topics: ["filters","price"].
"Have previous filter purchase currently in the Aprilaire filter box. Will use a final filter replacement that is still on hand in late November. This and the new order are the same filter from your company, Aerostar, Merv 11. Someday will have to try the Merv13"
"Thank you for your prompt and easy help with replacement of the damaged during shipment filters. I really appreciate it."
"So excited about the price and the MERV rating!"
"filters are fine and appear to do the job intended"
"Fast delivery and professional response when a refund was requested due to purchasing the wrong item. AAA+++"
"Good filter at a great price! I did have some damage to one filter during shipping,but it's still usable. Will buy again. Thanks."
"Very happy- saved money getting them here and they were delivered on time and in good shape-Very happy"
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