[Magnetic PVC ventilation mesh cover] The framework of ventilation masks is made of strong magnetic PVC material, which can be used for 5.5x12 inch metal fuses, ventilation ports and communication ventilated air outlets. Magnetic framework is easy to install and is suitable for iron floor cash register. [Easy installation and disassembly] The floor ventilating mouth cover is designed with a magnetic framework, and the ventilation mouth cover is easy to install and remove. You can easily remove it and clean it under the underwater, or use a vacuum cleaner to clean it to save time and energy. [Prevent small things from entering] A reasonable mesh design of the magnetic flooring of the magnetic floor to prevent small creatures from climbing out of the ventilation and letting you worry about it. It can also prevent small things such as jewelry, crayons, building blocks, snacks, small toys, pet foods and coins fall into ventilation. [Size] of 4 magnetic flooring loudsters ventilation, the