I searched the Knowledgebase, and found the specifications for paper sized and your device.
I keep failing to print envelope size 3 5/8 by 6 1/2 which is not on the list of size option in the printer panel.
I tried to use custom size to print above mentioned standard envelope but couldn't make it happen.
Can you help me, please? I am using bothe Window and mac with this altalink c8045 printer.