20x25x1 MERV 8 Air Filter, 7 Pack Replaceable Filter Media

Product Description: Importance of MERV Ratings and Filter Thickness

MERV, which stands for Minimum Efficiency Reporting Value, is an industry-standard used to rate the efficacy of air filters. We understand that this concept may be challenging for consumers to grasp, which is why we have developed an easy-to-use, application-based naming system to help you choose the filter that best suits your needs.

Indoor air quality can be significantly affected by factors such as pets, odors, and smoking. To address these concerns, OlitAir Air Filters offers a wide range of air filters to help you breathe easier and select the correct filter based on your specific requirements.

Ensuring a proper fit of your filter within your HVAC system is crucial. This involves verifying not only the right length and width but also the thickness of your filter. Most standard air filters are 1-2 inches thick, while media filters are generally 3-5 inches thick. The best way to measure your air filter size is to use a measuring tape, as the dimensions of your current filter are likely printed on the frame.

Choosing the Correct Filter Size:

A. 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 (e.g., 20 x 20 x 1). In contrast, the actual size is an exact measurement, normally in a smaller font, that depicts the filter's precise dimensions (e.g., 19.75 x 19.75 x 0.75). All filters have both nominal and actual sizes.

B. Measuring Your Air Filters: If your current air filter does not have a dimension listed on the frame, use a tape measure to record the length, width, and 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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