Hello GRANNADA.
Thank you for using the forum.
Here is the link to the paper sizes and specs for the WC 6015:
http://www.support.xerox.com/support/WC6015/support/en_US.html?objGUID=17915
I have also included a link to the user guide: http://download.support.xerox.com/pub/docs/WC6015/userdocs/any-os/en_GB/user_guide_en.pdf
The section on Printing on Both Sides of the Paper is discussed on the following pages:
Setting Up 2-Sided Printing.... 89
Loading Paper for Manual 2-Sided Printing ... 90
While capable of copying legal-sized media, this model of printer does not do any automatic duplexing with the copy function. It duplexes normally for prints, however.
I hope this helps.