Specify the paper size as A3, A4, A5, B4, B5, postcard, letter, or legal. This specification is valid if "Default" is specified for the paper size in the descriptor.
"A3": A3
"A4": A4
"A5": A5
"B4": B4
"B5": B5
"PS": Postcard
"LT": Letter
"LG": Legal
"NO": Default
"OT": Other
"LT": Letter