Double side custom paper size Booklet print on MAC

[Manolocs]

Hello, I search already in this forum and for your information:
I have set the correct HP driver it is not air-print.
I have set a new user custom size paper that is: Width = 324mm and Height = 157mm.
I want to print as a booklet with the binder in the height side of the paper.
The option Duplex Unit in the system preference printers is ticked.
I can not make it print it does not print on both sides of the paper on any other size paper.
I can not set my custom size when select booklet Printing>Paper for booklet dropdown list does not show my custom paper and some of the standard paper sizes are gray as well.

[ShlomiL · Accepted solution]

Hi,

Automatic duplex prinitng is only supported for select sizes, it is not supported for custom sized media.

See the 'Automatic duplexer (M252dw and M277dw)' section within the chart under Paper-handling specifications > Supported paper sizes, any supported size for Auto Duplexing is mart.

For custom sizes only manual Two-sided printing is supported, not automatic.

Regards,

Shlomi