Sorry for the delay in replying, I only just came on line and saw your question. Are you still looking for help with this?
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the only number I can find is BI 80T 3WH. There are no visible screws. the element goes into 4 holes with a small plate in the rear of the oven. The front of the element (near the door) has a slotted wire rod running across the width holding it to the ceiling.
Can I ask you to take a moment and rate my response? Please use the smiley faces which you should now see. Please remember you are rating me personally, not the website or the problems you have had with this machine.If you need to ask me anything after rating, please just follow the link in the welcome emailThanksRob