The inner sill is the vertical sheet metal under the door opening, and extends full-length from front of the door opening to the heel board, including the section underneath the rear seat pockets. It includes a lower flange to repair the outer section of the floor pan, and can be used when rust is found underneath the seat crossmember; if this problem is not present, you may be able to use partial panels SBO0333/SBO0334. Choose right- or left-hand side.