Due to some issues with the shipping company used, my first two items were damaged and had to be re-sent. However, the quick, professional, courteous customer service ensured that was done quickly and without any hassle! That said, the frame fits on my throttle quadrant perfectly and houses the GNS 530 unit very well. Just the right angle to prevent tipping out. I would be curious if there were a more positive mounting method, i.e. screws, clips, etc. but the current design works fine and is much more stable than the original holder that came with the GNS 530.