This door comes with lock & keys and is meant for a pole with a butt diameter of 6" only.If you are not sure of the butt diameter of your pole, take a flexible tape measure, wrap it around the base of your pole. This will give you the circumference of your pole. Once you have this measurement, take that number and divide it by 3.14 or pi. That will give you the diameter of the pole. If you're not sure, just call us and we can help!