I'm looking for a source for sheet PVC or Starboard to build the frame for a rear bench seat. I've looked thru McMaster, and some other sites, Found a few options but don't think it is what the industry is using. I tried searching the forum and came up empty. Anyone know where to purchase the plastic marine board to construct seats with? Or the correct name of the product I'm looking for would be helpful. I'll add a pic of the product i'm looking for if i can.
thx

The scrap I have is 3/8"- 7/16" thick.

I've had good luck with VERANDA PVC sheet, you can get it at Home Depot for about $150 for a 4 X 8 sheet, 1/2" thick.

Nice. Thx

Starboard is one name.

I just looked on Ebay for marine plastic and HDPE came up

https://www.ebay.com/sch/i.html?_fro...astic&_sacat=0

This is what you want, pvc board. It takes staples and screws nicely. You can also use pvc cement to reinforce joints.

A major distributor is Piedmont Plastics. They are all over the country and will have a variety of thicknesses.
https://www.piedmontplastics.com/