Four control methods: The cat door has four locking methods, inward-open, outward-open, two-way-open and locked. You can use this cat door to control the cat’s moving range at will, without having to open the door or the door. Easy to install: This cat door is suitable for brick walls, wooden doors, etc. metal, wooden doors and PVC doors. It can be installed in doors and walls with a thickness of 2 to 5 cm. A detailed installation diagram is included in the package, please follow the installation instructions. Easy to use and clean: This magnetic cat door is windproof, and the brush strip on the cat flap can clean the garbage from the cat flap and reduce the noise. Our cat flap has three sizes and three models, you can choose the model and color according to the size of the cat. Safe and non-toxic: the pet flap is made of ABS material, safe and non-toxic, and strong and durable. The middle flap is transparent design, which is convenient to observe the situation outside the door.