We make your sheet labels roughly A4 size unless you let us know. A4 is 8-1/4 x 11-3/4 inches.
We find A4 is an excellent size for 1000's uses.
Your sheet size may vary because we like to be efficient with space & keep your costs down. So we'll fit the sheet around your labels, close to A4 size.
We will show you exactly what size your sheet will be on your design proof, like this: