The lint filter and frame for your dryer traps unwanted lint and debris so your dryer can effectively dry your clothes. If the old lint filter is cracked or clogged, or the dryer takes too long to dry or if excessive lint is accumulating inside the dryer or its venting, you may need to replace the lint filter. To replace the filter, simply remove the old, damaged filter, and replace it with the new one. This part is approximately 13 inches by 3 inches.