I ordered this based on the look and the dimensions of the arbor. The width dimension was very important to me as I need to drive a lawn tractor through the opening to mow the lawn. The width dimension was an outside dimension, not an inside dimension. The inside dimension was of course to small and I needed to redrill the holes to put the arbor together. This in turn changed the look of the arbor, and not for the better. One of the poles was so bent that it took two of us to bend the pole into place to put it all together.