Protecting back wall from flame
 

I'm working on a bench that is 38" deep. I will have a phantom running on my side of it and a wood wall opposite of it. What kind of protection do I need on my wall, how much of the wall should be covered (as in how high). Is the distance great enough to leave the wall alone? What is the best way to go?

Darn it! Double post...how do I delete it?