David A Missoula , MT November 23, 2015 Appliance: General Electric Free Standing Microwave JVM1640WJ02 Ge Microwave Jvm1640wj02: I had lost one grease filter and the other was all bent up. How to replace Air Filter Mv-1120. I ordered two new grease filters and it took all of two minutes to install them. My ventilation system is purring like a kitten again!! Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes