When it comes to air filters, it's important to understand the difference between nominal size and actual size. The nominal size is the rounded number printed on the side of the filter, while the actual size is the exact dimensions of the filter. Knowing the difference between these two sizes is essential for buying air filters with confidence. Nominal dimensions refer to the rounded number used on air filter and wood labels.
This number makes it easier to market and categorize filters, but it's not always the same as the actual size. The actual size is the exact measurements of the filter, which can be slightly different than what's printed on the label. If your filter doesn't have the actual dimensions on it, you can measure it to get an accurate reading. For example, a size of 20x30x1 may appear on the filter label, but if you measure it you will see that the actual size is smaller than the nominal air filter size of 20x30x1. When you buy your air filter online, make sure you know both sizes: nominal and actual.
If you force an incorrectly sized filter into place, it can bend, damage it, or reduce its ability to function properly. Changing your air filters regularly helps prevent premature oven failure and save money in the long run. On the home page, first select the type of product (oven filters) and then select the nominal oven filter size (thickness) of your filter. The nominal size is usually printed on the cardboard edge of your air filter. Since air filters are usually sold for their nominal dimensions, it's important to learn how to measure them correctly.
