Mica Plate is mica paper with silicone resin by gluing temperature and pressed. As a kind of heat resisting and insulating product, it is widely used for home appliances such as electric hair-dryer, toaster, microwave oven, warmer etc. The sheets are large enough to fit over any size microwave magnetron chamber. Features - Color: As shown in the picture. - Material: Mica paper. - Size: Approx. 13 x 13 cm/ 5.1 x 5.1 inch (LxW). - They are replacement mica sheets to use when your microwave oven is "arcing" around or out of the chamber where the magnetron is located. - Effective repair of an arching microwave mica plates. - Installation is simple, you out the old microwave sheet, get a pencil and trace the old shape onto the new plate sheet, then cut along that shape, and the new sheet in microwave mica plates. - Easy to cut with a box cutter and shears; With a few minutes to cut and install. - The sheets are large enough to fit over any size microwave magnetron chamber.