Question about Epson WorkForce WF-7840DTWF

Hi Psaik, both types support A3 format for all functions. The WF-7840 DTWF can also print A3+ (329x483mm) via the rear paper feed.
Dear digitec: By the way, the type is called DTWF with F for fax.
Another tip: Have a look at the German website "druckerchannel", where you can see nice tables with the features of the printers and compare the models.
If you print a lot, I would recommend the Epson Ecotank A3 inkjet printers: ET-16600 or the faster 16650 ... more expensive to buy than the Workfore WF, but moderate ink costs because of refillable tanks, Eco ;-)