Mathew L Waterloo , IL August 05, 2014 Appliance: Whirlpool Microwave Oven/Hood 1.7 Cu. Ft. MH2175XSB2 Whirlpool Microwave Mh2175xsb2: Broken part. How to replace Grill Vent. Bought new part. It came the very next day. Less than 24 hour wait. 9 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes