Identify this Air Cleaner

Hey guys and Gals, I have had this dual snorkel air cleaner kicking around for a while and have had no use for it in my plans. So I put it on Ebay, and I wasnt exactly sure what its application is. However, by looking at the design of it compared to many others that I know are of value, mine looks like it is a much later version. So any one have any ideas?
Here is the link to the ebay listing.
Author: admin