Step 1 place your measuring tape at the bulkhead of your truck bed.
How to measure your truck bed for a topper.
So if your truck bed measures 76 you can go with the product listed for a 6 5 foot bed.
When you measure truck bed length you may find that the exact number does not match any lengths listed on our product pages.
Measure your truck bed length.
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.
Your truck bed length is determined by the distance between the inside of your tailgate and the inside of the bulkhead.
Record this measurement and label that number width.
That s because most truck and accessory companies round off their measurements to the nearest half foot.