These are just a few of the most commonly used envelope sizes. There are pre-existing evelope sizes appropriate for just about any materials to mailed. There is also the option of having envelopes “converted”. This process involves printing on a large sheet, then custom cutting and folding the envelopes to size. This process is often used for more complex designs that involve colors “bleeding” off the edges. Contact us if you are searching for just the right envelope. We will be happy to help you find it!