Side Loading Flat Mailers are lightweight white chipboard mailers designed to protect photos, documents, prints, certificates, and other flat items during shipping or mailing. The side-loading design makes it easy to slide products into place, while the self-seal strip helps save time by closing securely without tape. A convenient pull-tab tear strip makes opening easier for the recipient, making these mailers a practical choice for offices, schools, printers, ecommerce sellers, and fulfillment teams.