stewgl on the Cult of the Infinitely Baffled forum had put together a good ceiling mounted manifold using 4 of the IB15’s in his attic. His thread on the Cult forum is extremely detailed showing all the planning and build stages extremely well. Many in depth pictures of the process especially of his woodworking experiences. One of the best documented builds I have seen. He has even posted some video of certain points in the build and install process.
This is what it looks like up in the attic:
This is what you see inside the room, only the manifold opening in the ceiling:
Follow the following link to the Cult forum to read the full thread and see pictures of the build process: