where can i get 3/4" thick plastic sheets?

I am looking to replace my vdrive dividers on my 01 SAN. i was thinking using 3/4" plastic sheeting to make the panels. Does anyone know a good place to source 3/4" plastic sheeting suitable for the dividers?

If you want it to look factory give these guys a call http://www.affiliatedresources.net/subs/products.html they supply the factory gray board found in most newer boats

www.mcmaster.com has a lot of different plastic sheets in a whole range of thickness. weather resistance, width, length, price, etc. If you are in a bigger city, there may be a local plastics supplier that is cheaper, there was in Atlanta.

Like the others are suggesting, you can find tons of vendors online. I've bought stuff from McMaster Carr & from http://www.tapplastics.com

But I've also found a vendor in my own home town too. Use Google to search "plastic" and your own city. Then get on the phone and ask. Took me about 5 min. And saved me some shipping.