“Why is there 4X4 metal plate color grey inside microwave? Just out of the box I noticed a 4X4 piece of metal inside on the control side. It is grey color. My old microwave had a plate, but it was coated in white. Is this right? Won't this interfere with the cooking?”

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• Hello Anonymous, That’s a great question! The part is called a waveguide. Even though the waveguide has a metallic appearance, it is not metal. This part is essential to the operations of the unit and will not interfere in normal operations. Thank you for your question.

  Answered by FrigidaireSupport 12 years ago

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• It should not interfere with the cooking process

  Answered by Hodhod 10 years ago

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