![It's a piece of thin cardboard, but I don't understand why it's inside this Kenmore 790.80333310 microwave oven. Any guesses what function it serves? : r/whatisthisthing It's a piece of thin cardboard, but I don't understand why it's inside this Kenmore 790.80333310 microwave oven. Any guesses what function it serves? : r/whatisthisthing](https://i.redd.it/pygkzngisut01.jpg)
It's a piece of thin cardboard, but I don't understand why it's inside this Kenmore 790.80333310 microwave oven. Any guesses what function it serves? : r/whatisthisthing
![Is the silver cardboard piece on the inside of this RV microwave necessary? (High Pointe EC942K6BES Over The Range Convection Microwave Oven - Stainless Steel) Is the silver cardboard piece on the inside of this RV microwave necessary? (High Pointe EC942K6BES Over The Range Convection Microwave Oven - Stainless Steel)](https://answers.rvupgradestore.com/product/818690/images/Is-the-silver-cardboard-piece-on-the-inside-of-this-RV-microwave-necessary.jpg)
Is the silver cardboard piece on the inside of this RV microwave necessary? (High Pointe EC942K6BES Over The Range Convection Microwave Oven - Stainless Steel)
![A piece of cardboard from inside the Whirlpool microwave started going off, anyone know what this piece is? : r/whatisthisthing A piece of cardboard from inside the Whirlpool microwave started going off, anyone know what this piece is? : r/whatisthisthing](https://external-preview.redd.it/j5SiVTAcz8prAhOmXM7Cpvc07s3iUrJoTdTCPbHbxgU.jpg?auto=webp&s=84c09c2ecf4c575a5c1f2bf2c564f09dfa78eb33)