Product Description Product Name: Attachment Cat Door, Material: Polystyrene, Polypropylene. Set Contents: Mounting door main unit, screws x 8, screw hidden cover x 8, Country of Origin: China; Precautions for Use: There may be cases where it cannot be used depending on the size of your pet, so please check the size before using. Do not apply excessive force or contact with chemicals or chemicals. Please wipe off the dust and other items from the mounting surface and then follow the installation instructions and install them gently. Please be aware that we will not be responsible for any accident or damage due to use or modification of this product outside of its intended purpose. ●In the event of a defect, please contact us by email or call first. Sold by Heavena, Co., Ltd.