[BrandonMods]

Originally Posted by jimsiggy

Coroplast is what I plan on using, but potentially I may use the 4'x8' sheets of the material you would line your shower with. I think it is cheaper and easier to get than coroplast. 1/16 in. x 4 ft. x 8 ft. Plastic Panel-63003 - The Home Depot

It looks like that may be a good option to pursue. It looks like it is a fiberglass panel. The melting point is much higher than the temperature of exhaust.