It is wood. There is more than enough to do the back solid. So the back side will not match the the other three, but at least it will all be the same, only catch is half of it is painted so I'll have to revise my plans to leave the wood natural with just a weather coat, cause I don't have a power sander and I am NOT hand sanding that much siding . But something will come to me. i could just paint the back with a neutral earthy tone and leave the other sides. Any questions about it just explain that the east (back( side gets more weather exposure and needs the extra protection (which is actually true). Yes I need to get some pics uploaded, I have been horribly delequent in doing that last couple of week. Maybe I'll get the backside totally finished this thursday and make up for it with some super pics