Is putting a manufacturer's product manual on my site in PDF duplicate content

[merch_zzounds]

I add the product manuals to our product pages to provide additional product information to our customers.  Is this considered duplicate content?  Is there a best way to do this so that I can offer the information to my customers without getting penalized for it?  Should they be indexable?  If not how do I control?

[Lumina]

I'd de-index them, since it's not only likely duplicate content, but it's also content you didn't create. I suggest erring on the side of caution.

[KevinBudzynski]

As Bryan said, be safe. It's not the original so use a canonical link element to point to the original (through the http header).

[rjonesx. 0]

Thanks for the answer Kevin. For those interested in learning about using the HTTP Header to establish a canonical tag, you can look here on Google's Webmaster Central Blog.