You could contact Jayco, but my guess it wouldn't cost you any more to make your own. Prablably less, and it will be better made.
We use ours outside and it got very wet on one trip and the particle board swelled up. I had a co-worker who's into woodworking make me a new table out of cedar. With the sealant on it's waterproof, weighs about 1/3 the weight of the original presswood table, and it's far stronger. I can stand on it and it won't bend. About $50 for materials. One of the best mods I've ever done.