The Firefly offers a vertical adjustment of 5.5”, allowing it to clear most camper shells. When opened, the distance from the top of the horizontal tube (in the receiver) to the shuttle plate (on the umbrella mast) is 56”. The distance from the top of the horizontal tube to the canopy’s perimeter is 60”. An additional 5.5” can be added to these measurements at user’s discretion. Please measure accordingly to ensure compatibility with your vehicle.