Stephen H Cary , NC May 08, 2018 Appliance: Kenmore Microwave Hood Combo 66560609000 Kenmore Microwave 66560609000: Broken vent grill. How to replace Microwave Vent Grille. The replacement part was a direct fit and replacing it took only about 5 minutes. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes