Product details:

The AFB Bronze filter by FilterBuy is a step up from a standard fiberglass filter. It is designed for everyday home use and removes dust mites and debris from the air. Whenever you are choosing an air filter, make sure that you compare the nominal and actual size of the furnace filter that you are replacing. In this case, the nominal size of the filter is20x20x1 while the actual size of the filter is 19.75 x 19.75. Generally, the nominal size is rounded and in bigger print while the actual size is in smaller print and in parenthesis to the side. The AFB Bronze filter is designed to last 3 months, or 3 times the average fiberglass filter. Note that AFB filters come in AFB Bronze (Merv 6), AFB Silver (Merv 8), AFB Gold (Merv 11), and AFB Platinum (Merv 13). The most commonly used filter for home or business use is the AFB Silver (Merv 8). FilterBuy: Breathe Better!