Canon LBP351 Series Service Manual page 17

Paper size
Envelope DL
Custom paper
*1:
Portrait: Width: 148.0 to 215.9 mm, Length: 210.0 to 355.6 mm
Landscape (Only when using the UFR II printer driver): Width 148.0 to 215.9 mm, Length 148.0 to 215.9 mm
*2:
Portrait: Width 76.2 to 215.9 mm, Length 127.0 to 355.6 mm
Landscape (Only when using the UFR II printer driver): Width 127.0 to 215.9 mm, Length 127.0 to 215.9 mm
110.0 mm x 220.0 mm
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Cassette
-
*1
10
1. Product Overview
Multi-purpose Tray
*2