Panasonic Built-in IH Cooking Heater - Model Name: S82EB1S - Function: IH Cooking Heater - Size: Built-in type Thank you for viewing. The top glass is cracked. I used it as is until I replaced it the other day. It was working without any problems. I wiped off the dirt easily, but there is still some dirt. I haven't cleaned the back either. Therefore, this item is not guaranteed and is considered junk. Please understand that we do not accept returns, exchanges, or complaints.