Looking for a Custom Multiple-Select ComboBox

[eqix-sgd]

We're looking to add some multi-select pulldowns to our latest project, and the control we'd like to use, while not totally uncommon in the software world, doesn't seem to be a standard RichFaces one. I'm looking for a pulldown that's populated with a list of checkbox-enabled entries that can be selected or deselected individually.

Has anyone seen an available RichFaces control like this? If so, could you point me to it?

Thanks!