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Filterbuy Allergen Odor Eliminator 20x20x5 MERV 8 Pleated AC Furnace Air Filter

Filterbuy Allergen Odor Eliminator 20x20x5 MERV 8 Pleated AC Furnace Air Filter

Choosing the Correct Filter Size

stack of green frame 16x20x1 filters showing nominal and actual size being organized by employee

Nominal Size vs. Actual Size

The nominal size is a shorthand number rounded to the nearest whole or half inch, normally in a larger font (ex: 16 x 20 x 1). Whereas the actual size is an exact measurement, normally in a smaller font, that depicts the filter's precise dimensions (ex: 15.50 x 19.50 x 0.75). All filters have both.

air filter with the length width and depth identified next to a green measuring tape

Measuring Your Air Filter

If your current air filter does not have a dimension listed on the frame, use a tape measure to record the width x length x depth to find the actual size. Then round these measurements up to the nearest inch to find a corresponding nominal size, which will be easier to locate when searching online.

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From $42.99
Filterbuy Allergen Odor Eliminator 20x20x5 MERV 8 Pleated AC Furnace Air Filter—
$42.99
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Description

Choosing the Correct Filter Size

stack of green frame 16x20x1 filters showing nominal and actual size being organized by employee

Nominal Size vs. Actual Size

The nominal size is a shorthand number rounded to the nearest whole or half inch, normally in a larger font (ex: 16 x 20 x 1). Whereas the actual size is an exact measurement, normally in a smaller font, that depicts the filter's precise dimensions (ex: 15.50 x 19.50 x 0.75). All filters have both.

air filter with the length width and depth identified next to a green measuring tape

Measuring Your Air Filter

If your current air filter does not have a dimension listed on the frame, use a tape measure to record the width x length x depth to find the actual size. Then round these measurements up to the nearest inch to find a corresponding nominal size, which will be easier to locate when searching online.