 And this eliminates so much. There's no lumber. There's no insulation. You put this stuff together because it's already insulated. It's already engineered. You route out on the inside, almost like you would like styrofoam, for instance. You route that out for your plumbing, your electrical, and then you can mortar or stucco on the outside or on the inside. You could sit there. No need for drywall. You could basically skim coat the whole thing.