Hey there. I've looked all around and I can't seem to find anyone selling plexi/lexan/acrylic panels big enough for what I need. I'd like to get at least 17"x15". It would also be helpful if the site accepted paypal, but that isn't required. Also, I should mention that I'm in the US, so I'd prefer to avoid overseas shipping charges Thanks for any help you guys can offer.
Home Depot and Lowes do acrylic sheets that big and even bigger. I will say that Home Depot seems to be a little cheaper. Now, that is unless you are looking for one of the window kits with the monster rubber molding that locks it in place. In that case...I can't help you much. But I believe you could purchase the lock strip molding from BestByte.net for $0.99 per foot. Not the look I typically go for, but if it's what you want there you go.
Duh, thanks guys. I completely forgot I could get this stuff at Home Depot. As for the molding, I'm actually going to be bolting the window into place, and using a U shaped thin molding around the edge of the metal. Thanks again!