Mark - you can easily make this out of a material called Starboard. I have used this to replace most of my teak on my console. It is easier than wood to work with. Cut up a few pieces on the table saw, round over the edges with a router, screw them together and you should be in good shape. Here is the link for the company. I bought from a local distributor - West Marine was way overpriced.
http://www.kingstarboard.com/