The printer supports duplex printing and can handle paper sizes up to A4, but it is not explicitly stated whether it supports 200 gsm cardboard. Generally, inkjet printers such as this one can print on cardboard up to a certain thickness, but for 200 g/m² it is advisable to check in the manual or in the print settings whether a thick paper or cardboard type can be selected and make a test print.

The duplex printing function is present, so double-sided printing is supported, but cardboard handling often depends on the tray capacity and paper path, which is not detailed for this model.

In summary, double-sided printing is possible, but for 200gsm card stock you need to set the paper type correctly in the print properties and check compatibility via practice tests or by consulting the Epson manual specific to this model.