Structures
Straight tuck end
A straight tuck end carton has its top and bottom main closure flaps attached to the same body panel.
What it means in packaging
Both ends tuck in the same orientation relative to the carton body. Designers use this relationship when planning the front face and flap artwork. The side seam and closure details still depend on the specific construction.
A practical example
A small cosmetics carton may put both main closure flaps on its back panel to support the intended front presentation.
What to check
Inspect the assembled orientation and confirm which face your supplier treats as front before placing text.