The Home Depot offers a variety of air filters to meet your needs. Inside the 20x30 air filters, you can find both electrostatic and non-electrostatic filters. However, the 1-inch filter may be too shallow, resulting in a loose fit that allows unfiltered air to enter the ducts. There are hundreds of different sizes of oven filters because the air filters and the oven are the same.
In terms of the most common filter levels sold in retail stores, MERVs from 1 to 16, Owen said that this range “ranges from filters that can catch a golf ball (I'm exaggerating a little) to filters that catch just about anything. If you try to use a 4-inch-thick air filter in a system that's made for a 1-inch-thick filter, the efficiency will actually worsen. If you're looking for a thicker air filter to improve air quality, it might be best to focus on the MERV rating. The thickness of the air filter ranges from 1 to 5 inches deep; some options are more common than others and your oven can determine the thickness you can use.
If your air conditioning system uses a thicker filter (usually 4 to 5 inches and is usually mounted on the air controller), it is likely that it was specifically designed for medium-efficiency MERV filtration. Some air conditioning specialists have also found that thicker filters provide a perfect fit that prevents unfiltered air from passing through. Filter King offers hundreds of different filter sizes that can be used in various home systems, including the oven. On the other hand, you can use a 1-inch thick filter in compartments that can accommodate a deeper filter.
Thicker air filters tend to last longer because they have more square feet to capture and retain air particles. A deeper depth can also improve filter life and efficiency; it also makes it easier for air to enter and exit the filter. When used in real-world applications, because the air in your home is constantly recirculating through ducts and through filters each time, the cumulative effect of the filters increases. The air is charged with particulate matter, passes through the filter only once and the results are measured. You can also scroll down and use the air filter size chart to choose the right size and pay quickly. This rounded measurement is called the nominal size and is used to match the correct filter to the appropriate slot for the air filter.