Steam table pans are standard sized and come in full size and half size. You can buy racks for them at Ace Mart or Allied Kenco. Search for "wire rack". Here is a link to the full sized rack at Ace Mart - http://www.acemart.com/prod4592.html
You can also buy half sized and full sized lids for foil pans at Sam's Club. The lids come in handy for ribs and chicken thighs, but you still have to wrap for bigger cuts of meat.
Lone Star Grillz Cabinet Smoker, Backwoods Fat Boy, Hasty Bake Gourmet, 22 1/2" Weber Smoky Mountain, Napoleon Grill