1.REMINDER: 5231EL1001C filter and W10120998 filter are SIMILAR in SHAPE and SIZE. (1) 5231EL1001C filter HAS HOLES IN THE TOP, but W10120998 filter HAS NO HOLE IN THE TOP! (2) 5231EL1001C filter is SEALED TO THE TOP, but W10120998 filter is SEALED TO THE HALF! If your original filter has NO HOLE IN THE TOP or is SEALED TO THE HALF, this filter will NOT FIT YOUR DRYER! 2.Compatibility: 5231EL1001C filter is not universal, it only works for LG and Kenmore dryers with Specific Model Numbers, and replaces part number 1668214, AH3527575, AP5248138, PS3527575. Most of the compatible model numbers have been listed in the description. 3. and : A lint filter not only filters the air inside the dryer, but also traps any lint and debris. You need to replace the lint filter if the frame cracks or the screen gets a tear in it. This 5231EL1001C high-quality exact equivalent part is just right for the job, and will be an ideal replacement for your old, cracked or broken lint filter. 4.More Efficiency: Featured with durable plastic construction, this filter can catch and trap lint for your dryer, which helps increase airflow to maximize drying efficiency and reduce drying times. Never operate the dryer without a lint filter in place. There is a felt seal along the rim for better performance, which can prevent air from escaping through the outer edge of the filter.