Canon BJC-3000 Series User Manual page 51

I US Com. #10 Envelope
Media Type
US Com. #10
0.28"
0.12"
0.25" 1.25"
Recommended printing area
(The printable area is identical to the printing area.)
Printable Area (width × height)
8 in. × 3.7 in.
Printing on Paper and Other Media
Printing Area
51