Microwave oven parts, super thick heat insulation accessories, does not include 4 corners, the size is 4 x 4.27\" (9.9 cm x 10.8 cm). 100% quality guarantee, installation and replacement are very simple. Microwave mica chips can effectively prevent water, oil and other substances from splashing on the magnetron or other components during the food heating process, thereby playing a protective role. When the microwave oven mica plate cannot be cleaned due to severe soiling or when the black spot has decayed, it must be replaced immediately; otherwise, it is susceptible to fire and corrosion, which will damage the magnetron over time. This mica plate can be used in many brands and models of microwave ovens and ovens and can be replaced as long as it has the same size and shape. The mica plate is easy to install and easy to use. Remember to clean the mica plate during daily cleaning, and be sure to keep it clean and dry. It is recommended to replace the mica plate regularly, as its quality directly affects the function and service life of the microwave oven.