The GateKeeper comes in two sizes;
- Medium 53" Long x 5" wide x 17" High -This will fit current model mid size trucks and some late model full size trucks*
- Large 62" Long x 7" wide x 20" High - This will fit current full size and most late model full size trucks*
*When sizing the GateKeeper for older full size trucks, measure from the inner lip of the top surface of the tailgate out and down to the bottom edge of the outer panel. If it is less than 27" go with the Medium.