PesachGram Correction: On page 15 of the paper and virtual versions of the PesachGram, the question and answer should read:

Dear Rabbi,
Do I really need to cover the shelves of the fridge and the racks of the oven?

Covering the shelves of the fridge or freezer is not required, and may possibly be harmful to the operation of the appliance. Covering the racks of the oven is not required if you koshered your oven using the self-cleaning cycle. If your oven does not have a self cleaning cycle and you kashered by heating it up to the highest temperature for a few hours, the racks should be covered. Alternatively, you may take those racks and self clean them in someone else’s self-cleaning oven, and then you would not be required to cover the racks.