Measure the outside distance between your bed rails and compare it to measurement a on the illustration above.
How to measure your truck bed for a tool box.
Now you have the measurements of your truck bed.
Measure the inside length of your bed from inside the front bulkhead rail to the inside of your tailgate compare that measurement with dimension a in the illustration.
If you are going to buy the accessory like toolbox or tonneau cover truck caps then change the dimensions accordingly like in the metric system in feet or inches.
Moving along your bed rail extend the measuring tape to the inside edge of the top of your tailgate.
Most standard boxes won t extend all the way to the floor but some oversized tool chests might be taller than your bed and won t fit properly.
And measure the distance from the top to the bottom of the bed.
For this number measure how tall your truck bed is from the floor to the top of the rail.
This measurement will let you know the maximum height of your toolbox.
Using the picture of the low side box above and the instructions below measure your truck bed to insure proper fit.
Your best bet to get an accurate measurement is to not place the tape measurer on the bottom part floor but simply run it straight down the length.
For crossover toolboxes be sure to properly measure the distance from the outside of one rail to the outside of the other.
How to measure your truck bed for a crossover tool box using the picture of the crossover box above and the instructions below measure your truck bed to ensure proper fit.
First measure the height of the rails and the distance between the rails.
Again the tape measure should be in a straight taut line even with the top of the bed.
It s key to properly measure your truck bed for a toolbox.
Record this measurement and label that number width.
To measure the length of a truck bed you should start at the bulkhead and measure right up to the inside of your tailgate.
Record the measurement in inches.