2 1/4″ wide. (actual: 2.321″ wide x 2.946″ high x .628″ deep). Iron body. Iron shackle. Black japanned finish. Flat key. Operating key. Double tab clevis and chain. Flat case posts. Key tip goes through back of body. This lock was offered in the following finishes: Galvanized and Black japanned. Catalog #: 531, first appears in catalog of 1890.