Printer specifications are real and accurate and meaningful, but are not to be confused with image resolution. Printer ink dots and image pixels are simply very different things, and one color image pixel requires many printer ink dots. This is why we need a 1200 dpi printer (ink dots) to print an image at 250 dpi (pixels).
Q: What are the standard postcard sizes you offer? A: For flat standard postcards, available sizes are as follows: 4 x 6, 4.25 x 6, 5 x 7, 5.5 x 8.5, 6 x 9, and 6 x 11. Folded postcards have 2 kinds: half-folds and tri-folds.
LETTER - SIZE MAIL DIMENSIONAL STANDARDS TEMPLATE. Minimum mailable dimensions for pieces Â¼â thick or less: 3Â½â high, 5â long, .007â tick. Use this template to check: â¢ General Mailability: minimum required dimensions. â¢ Postcard Rate: maximum dimensions. â¢ Letters: maximum dimensions.