For many homeowners, understanding the difference between nominal and actual furnace filter sizes can be a bit perplexing. Nominal sizes are used to simplify the sizes of the furnace filters, but the actual size of the oven filter may measure differently. For instance, one of the most popular oven filter sizes is 20 x 25 x 1 inch, however, the actual size of the oven filter measures 19.5 x 24.25 x 0.75 inches. Most oven filters have both sizes printed on the sides.
To find the correct size of your furnace filter, first select the type of product (oven filters) and then select the nominal oven filter size (thickness) of your filter. If your current air conditioner filter has no size, you can measure the length, width, and depth of the filter and compare to find the actual size of the filter with the corresponding size of the furnace filter in the oven filter size chart (nominal size). If you have an old filter from your oven that has the dimensions printed on it, determining the size is not a problem. Standard oven filter sizes (also known as air conditioner and oven filter sizes) and hard-to-find sizes are included in a list with their actual sizes and MERV options. It's important to understand that these dimensions are not necessarily the actual dimensions of the furnace opening where the filter is installed.
The Lennox filter below shows the part number X0583 and compatible Honeywell part numbers FC100A1029 and FC35A1001, which this filter can replace on the real filter (see image of Lennox filter below with item number and size of filter along with compatible filters).To instantly improve air quality, it's important to choose the right MERV rating for your family. The following oven filter size chart lists standard size 1, 2, and 4 inch deep air conditioning filters for your air conditioner, furnace, air conditioning, and atomic filters. Note that many model numbers are very similar, so it's important to check the actual size (the actual dimensions of the filter) to make sure you have the correct one. If you use this Atomic chart, checked by Atomic experts, as a search engine for oven filter sizes, it's easier to find the right fit for your oven. When selecting an oven filter for your home or business, it's important to consider both nominal and actual sizes.
Nominal sizes are used to simplify furnace filters but may not accurately reflect their true measurements. To ensure you get a perfect fit for your furnace or air conditioner, measure both nominal and actual sizes before making a purchase. Atomic filters provide a wide range of options when it comes to selecting an oven filter for your home or business. With our comprehensive list of standard and hard-to-find oven filters along with their corresponding MERV ratings, you can easily find a perfect fit for your needs.
