Measurement templates can be found at the bottom of this page. Be sure to print the paper templates at 100% scale (Actual size). Below is an example of what your printer screen should look like. After printing, a credit card should fit perfectly in the square to the right.
This video shows an example of how to scale your PDF correctly.
In this example you would set scaling to “none” for printing these templates
Fleetwood Measurements (no template required, use a tape measure to measure up from the upper bend in the door panel)