At the link you will be able to download lots of information on constructing your own coffered ceiling.
Step-by-step instructions to help you create a coffered ceiling. It is not as difficult as you might think.
Create an attractive beam and panel ceiling with just 2x4s and fiberboard. It is inexpensive, easy to assemble and looks like a classic beamed ceiling when painted.
Hide wires, pipes, and insulation behind these lift-up ceiling panels that slip into a concealed steel grid. The panels are easy to assemble – and even easier to remove.