Whirlpool 71002111 Grease Filter Replacement Fits Many Whirpool Maytag and Jenn Air Models Many foods will leak grease and give off odors while being microwaved, making it crucial to have a working filter that purifies the air before it wafts its way into the kitchen. An unclean, worn-out filter will not only lead to foul odors being released, but may also effect the overall efficiency of the microwave Filters should be cleaned or replaced at least every six months This grease & air filter can be used in both vented and non-vented microwave ovens and is constructed primarily of aluminum Please ensure the above dimensions match your existing filter before purchasing this oven filter