PRODUCT DESCRIPTION The Cardinal Gates 10.5" Gate Extension (Model BX-1) is compatible with the Cardinal Gates Auto-Lock Gate (Model MG15), Stairway Special Gate (Model SS30), and Outdoor Gate (Model SS30-OD). The extension is available in either white, black, or brown to match the color of your gate. This aluminum extension adds an additional 10.5" of width to your gate, allowing greater span for larger openings. All necessary hardware is included to attach the extension to your gate. NOTE: It is recommended to use only one extension with a gate. FROM THE MANUFACTURER 10.5" width extension used with MG-15, and SS-30 Gates. Available in Black and White.