non-restricted: Can be used with wood, metal, interior & exterior doors. Home or office: This automatic door closer is suitable for use with doors at home and in the office. Automatic: This strong and durable steel wired closer shuts automatically. Built to last: The cable is not easily susceptible to rust, is anti-corrosion. anti-abrasion & makes low amounts of noise - long lasting. Installation: Easy to install. Can be used 24 hours after pasting - pasting glue included. Spring door closer: Get an automatic spring door closer. Spring Door Closer Deal | Living Social | Living Social