Coroplast

Perhaps FastSigns has a shop in your area? Try www.fastsigns.com. Hope that helps, and good luck on your search! =)

Look in the yellow pages too for sign companies. Just start calling around. Get a few quotes because some of them will try to rip you off. One place quoted me $40 for a 4x8 sheet!!!! The best price I got was $8 for the same size. It probably helps to mention that you're building a gp cage so they don't think you're a competitor. The $8 place said they've provided quite a lot of coroplast for cages.

Here?

Montroy Supply Co.
971 Vernon Way
El Cajon
California 92020
(619) 258-6960
They come in 4x8 ft sheets white and colors. They cut it for you if you ask. The white sheets are $12 and the colored are $14.

Coroplast
Victoria
3/24/04

This was on the find materials site on guineapigcages.com Hope it helps!