The cat door consists of a black mounting frame and a transparent flap with a seal that ensures airtightness. The product includes a locking mechanism with four operating modes, controlled by two colored sliders, and a mounting kit with screws and installation instructions. It is designed for installation in doors or walls, allowing the cat to move freely in and out. The locking mechanism allows for different access modes, and the seal protects against heat loss and wind. Installation requires cutting a hole and securing the frame to the surface. Product specifications: black plastic frame, transparent flap with seal, locking mechanism with four modes, two locking sliders, mounting screw set, installation instructions.