42" by any size (Example Sizes: 30x42, 42x42, 42x56, 42x84, etc.) Most conferences and poster sessions have poster measurement requirements, so double check that your poster's PowerPoint slide is the ...
Kinko's offers a wide variety of poster materials. $7.25/sq. ft. PhD Posters also offers good pricing and quick delivery. Other departments on campus have poster printers. Be sure to ask around.