Art Guidelines and General Information for Screen Printing We can view many file types, but the ones we prefer are designed in vector based programs such as Adobe Illustrator CS or Adobe Freehand MX ( .ai or .eps). Each object in a vector file can be selected and individually manipulated independently from the rest of the image. When providing such files, it is important to create outlines or convert to curves for all text used. Logo size restrictions for Screen Printing Hats 3” x 1.75” Regular Prints (T-shirts, etc.) 14” x 14” Oversize Prints 15” x 15” Youth Prints 9” x 15” Leg Prints 4” x 14” Banner Size 36” x 53”