These are definitely prefab. There are junction boxes mounted to each cabinet so they can be placed without the wiring already being run under the cabinets. There’s probably not a good spot near the factory to test a site designed for trailering. And since these are prefab, they can wire them up in the factory and see if they work before they ship them out.Yeah, hard to tell if this is a new prefab design, or just poured on-site in two batches. It seems very strange to see a new pre-fab design out in the middle of nowhere OR. You'd think we'd see one or two crop up near the NY factory first so they can troubleshoot any issues without all the travel.