Gloria C Kissimmee , FL March 18, 2015 Appliance: Whirlpool Microwave Hood Combo MH8150XMQ0 Whirlpool Microwave Mh8150xmq0: The microwave vent grill and outer door frame were cracked. How to replace Frame, Outer (White). We removed the old vent grill and outer door frame and replaced them with the new parts ordered from AppliancePartsPros.com. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes