(A) - Top Length, Measured from hole to hole (as shown in diagram). (B) - Wheel Well, Measured from the lowest point on the outside leg to the highest point of the wheel well. (C) - Overall Height, Measured from the lowest point of the outside leg to the highest point overall. (D) - Outside Leg Width, Measured from the side of the fender skirt to the inner side of the leg. (E) - Inside Leg Width, Measured at the widest point at the bottom of the inside leg (not always applicable). (F) - Overall Length, Measured fromt he longest points of the fender skirt.