Swing mount system for a 20-inch iMac?

we have 20-inch imac (2008 model) , mount it's flat against side wall when not in use, swings out 90 degrees use. along lines of this:



has done this?

 

http://store.apple.com/us/product/tj540ll/a?fnode=mty1nda5oq&mco=mtm1nda2ota

 

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