is this normal on the bottom of the doors ?

[niterider65]

Ok Im workin on the doors of the truck today fixing an oil caning on the doors i missed so i stared all over and repulled the dents on the passanger side . that look like barbwire sracpes in the door from po being an farm truck .any way i found after priming the door about an hafe in or so from the bottom of the door an outward ridge running allmost the leinght of the door exsept for the for front and rear .. it is on both sides is this from the factory this way . when the put the doors together ????