Marcia M La Grange , IL May 15, 2016 Appliance: KitchenAid 30" Built-In Microwave KBHS109SSS00 Kitchenaid Microwave Kbhs109sss00: Missing vent cover. How to replace Screw. Ordered vent cover and vent cover screws Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes