Eugene L North Scituate , RI February 26, 2022 Appliance: Whirlpool Microwave Hood Combo MH2155XPT3 Whirlpool Microwave Mh2155xpt3: Broken outer door frame and vent grill. How to replace Microwave Vent Grill. By removing the broken parts and installing the new parts! Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes