Why is there plastic film or a cardboard-like cover inside your Samsung microwave?

Last Update date : Apr 10. 2026
Interior of a Samsung microwave showing a rectangular magnetron cover on the side wall.

All microwaves include a magnetron cover, although its appearance can vary depending on the model. On many Samsung microwaves, this cover may look like a piece of cardboard, which can be confusing if you are seeing it for the first time. Some models may also have a plastic film on the microwave door.

Note: While universally applicable, the information in this guide was written for Samsung microwaves sold in Canada.

The magnetron cover protects the magnetron, which is the component that generates microwaves to heat your food. It prevents food splatter, grease, and debris from entering and damaging this sensitive part.

Although it may look like cardboard, it is actually made from a heat-resistant material (often mica) designed specifically for microwave use.

No. The magnetron cover is a permanent part of your microwave.

Removing or damaging it can affect performance, cause sparking, and may void your warranty. If the cover becomes damaged or heavily soiled, it should be replaced, not removed.

Yes. All microwaves, regardless of brand, include a magnetron cover.

Its appearance may vary. It can differ in color, thickness, size, and location. For example, it may be placed on a side wall or on the ceiling of the microwave cavity. In some models, it blends in with the interior walls, making it less noticeable.

You can clean the magnetron cover the same way you clean the inside of your microwave.

  • Use a soft cloth or sponge with mild detergent
  • Apply light pressure
  • Avoid abrasive pads, brushes, or harsh cleaners

Note: Do not scrub aggressively, as this may damage the surface.

No. The interior plastic sheet is a clear, thick layer attached to the inside of the microwave door.

It is securely installed at the factory and is designed to remain in place. Do not try to peel it off, as this may damage the door.

Yes. The protective plastic film on the outside of the microwave should be removed before first use.

This film is applied during manufacturing and packaging to protect the surface from scratches. It is not heat-resistant and may melt or become difficult to remove if left on during use.

Gently peel it off from the edges. If any adhesive residue remains, wipe it away with a soft cloth.

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