Your pet can only go out or come in with this door. It is controllable so that you can your pet entry or exist. Made of ABS material, safe, durable and practical. Your pet cat and kitten will like it. Unique door for your pet and make them happy. Features - Color: Black. - Material: ABS. - Size : About 22.5x20x3cm. - Installation: Step 1: confirm the installation position of door in your house, it needs to be looking for a position roughly estimate for the pets in your house through the height of the door installation height general ground, along the paper film on the door with a ruler and pencil drawing precision shearing, cutting tangent is marked out, identify the 4 screw holes in the door of the relative position. - Step 2: take the of the before opening the hole, use swivel head to make holes in four positions, then use the chainsaw to cut your door along the until the cut hole falls down from the whole door. - Step 3: before the formal installation of the door hole, the cat door hole on the door hole· draw the 4 screw holes with the actual position and draw before. Once this is done, install the cat door. - Great entry and exist door for your pets. - Suitable for cat and kitten, they will like it. - ABS material is safe, durable and practical. Package list: 1 x Pet Door