Hello and thanks so much! I found one at a great price and am not 100% sure if this is the exact one we used, but I do know we use this manufacturer for many products (including the pull-out ironing board in the same house), so it's quite possible and since the shelf is not included, I'm sure we just made that ourselves. The link is below. Hope this helps!
http://www.kitchensource.com/cau/ha-5.8.htm

Thank you so much for your speedy reply. I had seen that one but worried it might not work with a drawer. I will double check the measurements. Thank you again!!!

Hi again and yes I'm sorry you're right, I'm sure you did notice that it said without drawer and so did I, but yes, I was told they just found one that was low enough below the drawer and still had the proper swing arc and installed it below as you see here. You may want to just search around the hafele website itself. Thanks again and good luck!