New, unused item. I purchased this for my home balcony, but my old dog doesn't want to go outside anymore, so I haven't used it and have been storing it. Although the listing is in English, a Japanese version was released in other listings, so I've attached images. Please refer to them when installing. * A pet door that allows pets to come and go freely while the screen door is closed. It opens and closes easily, and closes tightly with a magnet, so it doesn't compromise the screen door's function. Attach the frame to the screen door net from both sides, secure it with screws, then cut out the net within the frame and attach the door. Please prepare a Phillips screwdriver, scissors, a cutter, and other necessary tools for installation. * 【Product Specifications】 * Country of Origin: Vietnam * Color: Frame - Black, Size: Large, Opening Dimensions: Width 37cm x Height 42cm * Material: AES screen door net, pet door specifically for screen doors to be attached to the bottom. The only tools required are scissors, a cutter, and a screwdriver. Install it at a height where your pet's back won't hit it when they go in and out. The key is to neatly cut out the net inside the frame after attaching it. Also, when attaching the door to the frame, be careful not to break the protrusions on the hinge. Usage Notes * Do not use near fire or in places that become hot. * If the pet door is not completely closed, it may be damaged if it hits the door when opening and closing a glass door. * Remove the door and store it during winter or when not in use. * The door does not have a locking function. Other cats, etc., may enter from outside. Pet door specifically for screen doors, Size 34cm x 31cm, suitable for dogs and cats to enter and exit.