Mailing Boxes are referred to as corrugated mailers and are manufactured in white and kraft. These small boxes are perfect for mailing smaller products that need the added protection and strength of corrugated. Made from 32ECT B flute corrugated, these mailing boxes are easy to assemble without the use of glue or tape. They erect easily. Simply roll over the ends and tuck the flaps which self lock into place. The top tucks into place on the front panel providing a secure closure for convenient parcel delivery.