It is made of mica sheet material. It has a good texture and can last for a long time. Simple installation, take out the old microwave sheet, and then put the into the microwave oven. And it is easy to be cut into the size according to your own need, so it is suitable for kinds of microwave oven. Features -Material: Mica sheet. -Size: About 11.60X6.50X0.10cm/4.56X2.55X0.04in. - This mica sheet is excellent for protecting your valuable microwave oven from burning. - You can cut it to the suitable size to fit your microwave oven. It is easy enough to cut with scissors. - This mica sheet is usually found inside the cavity on the right wall or on the upper wall of the oven cavity. - Professional and practical microwave oven repairing part. It has enough quantity for you to use and replacement. - Made of mica sheet material, in use. Good high temperature resistance, excellent insulating properties. Package list: 12 x mica sheets