Already have a roof rack. Mounting the Quick Pitch Weather shade 20 sec awning to a roof rack is done by mounting the Quick Pitch Awning to Front Runner bracket first to the roof rack and then securing the Weather shade 20 sec awning to the brackets. The QP awning to Front Runner brackets comes in 3 different models, Left Hand Side for mounting the awning to the left-hand side of the vehicle, Right Hand Side when the awning needs to be mounted to the right-hand side of the vehicle and the Awning to Double Cab bracket. The awning to double cab bracket was designed to mount the Quick Pitch Weather shade 20 sec awning to double cab vehicles with a shorter roof rack for extra strength.