Your truck bed length is determined by the distance between the inside of your tailgate and the inside of the bulkhead.
How to measure your truck bed for a topper.
Again the tape measure should be in a straight taut line even with the top of the bed.
Hold one end of your tape measure against the inside of your truck bed s left front corner and have someone pull the tape measure until it reaches the inside of the front right corner.
Measure your truck bed length.
Step 2 moving along your bed rail extend the measuring tape to the inside edge of the top of your tailgate.
Step 1 place your measuring tape at the bulkhead of your truck bed.
That s because most truck and accessory companies round off their measurements to the nearest half foot.
When you measure truck bed length you may find that the exact number does not match any lengths listed on our product pages.