Your machine prints received faxes on both sides of the paper when [2-sided] is set to [On].
Use Letter, Legal, Folio (8.5 in. × 13 in.) or Mexico Legal size paper for this function [16 to 28 lb (60 to 105 g/m2)].
When 2-sided printing is enabled, incoming faxes are automatically reduced to fit the paper in the paper tray.
MFC-L2690DW/MFC-L2690DWXL/MFC-L2710DW/MFC-L2717DW
MFC-L2730DW/MFC-L2750DW/MFC-L2750DWXL
Press . Press [On] or [Off].
Press .