Jorge R Fairfax , VA July 06, 2015 Appliance: Model WB7X10560 Broken grille sub assembly Ordered the grille sub assembly, the part was a perfect replacement, after cleaning the rest of the assembly and removing years of grease. al it took was 3 screws to put it together with vent assembly. reattaching it to the microwave took 2 more screws from the top and it was back to normal. the biggest issue was cleaning all the grease that the vent had inside. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes