{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/calitho.com\/relf-boxes\/#Article","mainEntityOfPage":"https:\/\/calitho.com\/relf-boxes\/","headline":"RELF Boxes","name":"RELF Boxes","description":"Roll End Lock Front (RELF) boxes are a popular style of folding carton, widely used in packaging because of their strength, security, and presentation value. They are sometimes called mailer boxes in the context of eCommerce, gifting, and influencer marketing. Here\u2019s a clear breakdown of what they\u2019re used for: \ud83d\udd39 Primary Uses E-commerce & Shipping […]","datePublished":"2025-10-03","dateModified":"2025-10-03","author":{"@type":"Person","@id":"https:\/\/calitho.com\/author\/dhara\/#Person","name":"dhara","url":"https:\/\/calitho.com\/author\/dhara\/","identifier":11,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/10c3540705ef30bdfaaf1855bbe194fe430547fc70a1f1bf1a94265c545b5dad?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/10c3540705ef30bdfaaf1855bbe194fe430547fc70a1f1bf1a94265c545b5dad?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Calitho Printing SF Bay Area","logo":{"@type":"ImageObject","@id":"https:\/\/calitho.com\/wp-content\/uploads\/2020\/01\/calithologo.jpg","url":"https:\/\/calitho.com\/wp-content\/uploads\/2020\/01\/calithologo.jpg","width":86,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/calitho.com\/wp-content\/uploads\/2025\/10\/103984_ATHENA-CLUB_Barbie-Mailer-Kit-scaled.jpg","url":"https:\/\/calitho.com\/wp-content\/uploads\/2025\/10\/103984_ATHENA-CLUB_Barbie-Mailer-Kit-scaled.jpg","height":1995,"width":2560},"url":"https:\/\/calitho.com\/relf-boxes\/"}