Key benefits Easy to install with complete instructions, suitable for windows, doors, cupboards and more. Flexible switch modes for versatile use: automatic closing, magnet attraction, or both sides can be entered and exited. Rear panel cover can be locked by plugging it in when not in use; or the door can be detachable for removal when desired. Quiet operation thanks to a brush strip that reduces noise when the door closes. Broad compatibility: suitable for glass doors, wooden doors, antitheft iron doors, aluminum doors, walls, and diamond mesh windows. Supports small, medium and large dogs and cats. What it is and compatibility A versatile door and window access solution with multiple modes to control pet entry. Installable on a range of surfaces including glass, wood, metal doors, walls, and diamond mesh windows. Designed to accommodate pets of various sizes, from small to large dogs and cats. Modes of operation Automatic closing mode: the door or opening closes itself after passage. Magnet attraction mode: uses magnetbased closing for secure containment. Dualaccess mode: both sides can be entered and exited. Lock and detach options: rear panel cover can be plugged to lock when not in use; or the door assembly can be detached as needed. Quiet operation Equipped with a brush strip to minimize noise during closing for a calmer environment. Installation and use tips Includes complete installation instructions for simple setup on doors, windows, cupboards and similar openings. Suitable for a variety of installation surfaces and door types as noted above. Use scenarios Home pet doorway: install in interior doors to keep pets contained in living areas while allowing easy access in and out. Glass or metal doors: add to a balcony or patio door to give pets outdoor access without compromising interior security. Multiroom homes: place on doors between rooms or near walls with diamond mesh windows to manage pet movement in apartments or houses, accommodating cats and dogs of different sizes. (Note: size and material details are not specified in the provided description.)