MAPIShould You Remove the Cardboard-Looking Cover Inside a Microwave?
New owners sometimes mistake the thin tan or gray panel inside the cavity for shipping cardboard. Samsung’s support documentation specifically addresses this confusion: the panel is part of the appliance. Its exact appearance and location vary by model, but it should not be peeled off just because it looks like packaging.
No. Do not remove the cardboard-looking cover inside the microwave. Samsung explains that it is a permanent magnetron cover, often made from a heat-resistant sheet material, that protects the microwave’s internal energy path from food splatter and debris.
no
The answer
No. The cardboard-looking panel is normally a permanent magnetron or waveguide cover, not disposable packaging. Samsung says removing it can damage the microwave and void the warranty.
Why
Samsung explains that all microwaves use a cover over the area where microwave energy enters the cavity, although the cover’s appearance varies. On some Samsung models it looks like cardboard, but it is a heat-resistant component intended to protect the magnetron opening from grease, splatter and debris. It should stay in place during normal use and cleaning.
When it is usually OK
- The manufacturer or qualified service procedure specifically instructs removal for replacement or repair.
- The appliance is unplugged and the work is being performed according to authorized service instructions.
When you should not
- You think the panel is disposable packaging because it looks like cardboard.
- The panel is intact and you are only cleaning the microwave.
- You want to improve airflow or make more room inside the cavity.
- You do not have model-specific replacement instructions for a damaged cover.
Risks and exceptions
- Removing the cover can expose the protected opening to food splatter and debris.
- Samsung warns that removing the part can damage the microwave and void warranty coverage.
- A damaged or missing cover can contribute to sparking and should not be treated as an optional trim piece.
Best practice
Leave the cover installed. Clean it gently with the same mild method recommended for the microwave interior, and if it becomes burned, cracked or heavily damaged, stop using the appliance until the correct replacement or service path is confirmed.
Alternatives
- Gently wipe the installed cover with a soft cloth and mild detergent
- Use manufacturer support to identify the correct replacement cover if damaged
- Arrange service when the cover is burned or sparking occurs around it
Frequently asked questions
Is the cardboard piece inside a microwave really cardboard?
Usually no. Samsung says the magnetron cover may look like cardboard but is a heat-resistant component designed for microwave use.
What does the microwave magnetron cover do?
It helps protect the magnetron or waveguide opening from food splatter, grease and debris.
Can I clean the microwave cover without removing it?
Yes. Samsung recommends cleaning it in place with a soft cloth or sponge and mild detergent, using light pressure.
What if the cover is burned or damaged?
Do not simply remove it and continue using the microwave. Confirm the correct replacement or service procedure for the model.
Sources
Written by Mapiance Editorial Team
The Mapiance Editorial Team researches, writes, reviews, and maintains practical guides and explainers for MAPIANCE.
Reviewed by Mapiance Editorial Team
Published Sep 28, 2026 · Updated Sep 28, 2026 · Verified Sep 25, 2026