Does the job, but a little too far forward
I have a 2022 Ford Transit high roof, and using this most-forward adapter requires that the frontmost edge of the hole you're going to cut (14" x 14") would cut through the roof support by about 1/4". To combat this, I had to move the template backwards on the roof about 1/2". It worked perfectly well still and I filled in the extra gaps I created on the roof using 3M window weld. All in all, no difference but just keep that in mind.