This part is the replacement lint filter for your dryer. The frame of this line filter is made of white plastic, and is approximately 13 ½ inches wide and 6 inches long. The lint filter sits in your dryer, and collects loose lint when the machine is operating. Sometimes the lint filter will become clogged or damaged, and in this case, you will need to replace your current lint filter with this part. To replace the filter, simply remove the old, damaged filter, and replace it with the new one.