Business Source Mailing Address Labels - 1" Width x 2 3/4" Length - Permanent Adhesive - Rectangle - Laser - Clear - 30 / Sheet - 750 / Pack - Self-adhesive - Clear mailing labels with a matte finish virtually disappear on paper for a professional, customized look. Each mailing label is backed with permanent adhesive for secure labeling. Sheets of labels are compatible with laser printers only. Each sheet includes 30 labels.