Kathleen G Wauseon , OH November 01, 2015 Appliance: Whirlpool 1.8 Cu Ft Microwave MH3184XPB0 Whirlpool Microwave Mh3184xpb0: Needed a new grill vent for microwave. How to replace Vent Grille. My husband was able to do it without much difficulty Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes