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How to measure your truck bed for a camper shell.
Record the measurement in inches.
Measure your truck bed length and width dimensions as well as the height of the truck cab from the front floor on the truck bed.
F150 composite cab corners that will never rust manufacturers typically change bed sizes when they introduce a new model year.
Measure the width of the truck bed from the inside of the side wall to the other side wall.
Cross reference chart for pickup truck bed size dimensions.
Divide the number of inches by 12 to determine the length of your truck bed in feet.
This is needed to ensure that the camper shell will clear the top of the truck cab by at least 6 inches to compensate for movement.
Moving along your bed rail extend the measuring tape to the inside edge of the top of your tailgate.
Write the measurement down.