Lexmark Laser Printers Label Manual page 109

The following table indicates the paper sizes each tray supports.
Paper Source Specifications for All Media
Source
Standard tray,
250-sheet drawer,
500-sheet drawer
Multipurpose Feeder
If you load paper that is narrower than 148 mm (5.83 in.) in the multipurpose feeder (for example, 3x5 inch
index cards), set the MP Feeder Size menu item to Universal.
Standard Sizes
(width x length)
Minimum
148 x 210 mm 215.9 x 355.6 mm
(5.83 x 8.27 in.) (8.5 x 14 in.)
148 x 210 mm 215.9 x 355.6 mm
(5.83 x 8.27 in.) (8.5 x 14 in.)
Maximum Minimum
139.7 x 210 mm
(5.5 x 8.27 in.)
69.85 x 127 mm
(2.75 in. x 5 in.)
Optra T
109
Universal Sizes
(width x length)
Maximum
215.9 x 355.6 mm
(8.5 in. x 14 in.)
229 x 355.6 mm
(9.01 x 14 in.)