Our 2’ high ramps feature a 6’ transition radius while the 3’/ 3.5’/ & 4’ high ramps have a 7’ transition radius. The technical overall height of the ramps is the number in the description (i.e. 3.5’ ramps = 42”) minus 4.5” since that’s how high the floor frame is. Therefore the height from the riding surface to the top of the coping is: 37.5”