Where to buy large lexan panel?

[Cooked Rice]

Where can I buy a lexan(polycarbonate) panel about 5x5 feet here in town? I know they have some stuff at building stores but nothing that big.

[acotomic]

Industrial Plastics and Paints
5-5558 1St Street S.E.
Calgary, AB Canada
T2H 2W9


If you have a corporate or business account (not sure if they do private sales):
Sabic Polymershapes
1440 Aviation Park Ne
Calgary, AB T2E 7E2