Printer paper

I am trying to set my printer to laser paper.  The paper format is 005.

Brother HL-6180DW series Printer
Paper formats
(001) - Letter 8 1/2 x 11 in
(005) - Legal 8 1/2 x 14 in
(007) - Executive 7 1/4 x 10 1/2 in

I just do not know how to set it.