I need to order new heat pleated vinyl for my old Magnum. As my boat never had this, what is the proper width of the heat pleats? 1 or 1 1/2" ?

The heat pleated vinyl under the dash on my sedan is closer to 1/2" The pleats on the seats, hatch cover, and cabin cushions are all sewn, not heat pleated on mine.

1 1//2"center of pressed seam to center. I recall, sewn pleats are 11/2" thread to thread.