Carlson 12-Inch Wide Extension Kit for Extra Wide Pet Gate Cover wider opening by adding this 12-inch extension kit to your Carlson Extra Wide Pet Gate, model #0930 PW Simple no tools required set up; For added stability use wall cups ONLY compatible with Carlson Extra Wide Pet Gate, model #0930 Extension kit dimensions 12-inch wide by 30-inches tall See attached user guide for assistance with set up and fit related questions