Custom coffer ed ceiling installation in Richmond Virginia. The ceiling was approximately 18 x15. The ceiling was divided into nine coffers. The beams are about eight inches wide by eight inches deep. There is a two piece crown molding installed in each coffer. You can customize your own coffer ed ceiling. The ceiling height is 9ft, not recommended for ceiling under 9ft. The installation took three days. The coffer ceiling in the photos has yet to be painted.