I purchased this Range with matching OTR Microwave. It had some sticky residue inside the oven window which would not come off. Then there was a loose screw in the framing around the oven door that fell half way out, point downward, and scratched the top of the stainless steel door. That was within a few hours of delivery. That unit was exchanged for a second unit which never made it off the delivery truck. The delivery man pointed out a defect on the rubber seal of the cooktop. The seal was turned under the glass for approximately 6 inches. Instead if trying for a third time with the same unit, we switched to another brand Range & OTR microwave. I have had them for two weeks without any problem