Ridgid Vacuum If Anyone Owns A Ridgid Wet/Dry Vacuum Can You Please Help Me With Identifying This Part?

If anyone owns a Ridgid Wet/Dry Vacuum can you please help me with identifying this part? - ridgid vacuum

I need to know what that means, the vacuum can be difficult to determine for some of you, but I need the name to advertise them. Here are some pictures from the room.

http://i71.photobucket.com/albums/i146/ledzeppelin489/photo.jpg

http://i71.photobucket.com/albums/i146/ledzeppelin489/photo-1.jpg