Return width
Width of the double-wall return (crease to crease); accommodates flaps in the pocket.
Corrugated shipping boxes / JETDIELINE
Corrugated mailer with double side walls and an external tuck closure. The lid locking tabs engage through oblong holes in the front wall; the construction is erected without gluing.


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03 / BOX
Simplified display model without material thickness, not to scale.
The 3D view is not available in this browser. The image shows the folded shape.
corrugated.mailer.lockCorrugated mailer with double side walls and ears like the mailer box; the lid overlaps the outside of the front wall with a closure flap whose locking tabs snap into slots in the front wall. No gluing, can be opened repeatedly.
Erect the front and back walls and fold the ears inwards. Erect the side walls, fold the turnover and inner wall over the ears and insert the tabs into the bottom slots. After filling, fold in the lid dust flaps, close the lid, place the closure flap against the outside of the front wall and insert the locking tabs through the slots.
Flute direction parallel to the blank’s y-axis: double-wall creases fold neatly, lid hinge and tuck flap remain stiff (check with the test printer).
Test fit, folding and closure on a sample made from the intended material. Confirm material thickness, grain direction and production steps with your printer.
Inside dimension
These dimensions describe the preview, not a fixed packaging size. The app recalculates the dieline for your own dimensions.
Width of the double-wall return (crease to crease); accommodates flaps in the pocket.
Gap between adjacent flaps or walls; at least approximately material thickness.
Length of ears or corner flaps as a proportion of half the inside width.
Length of lid dust flaps as a proportion of inside height.
Bevel of dust flaps (also ears on mailers); larger angles prevent folding collisions.
The parameters closureTabCount, closureTabWidth and closureTabDepth describe the locking tabs on the outer closure flap. The lockTab parameters belong to the double side walls and their bottom slots. Both groups are visible in the same dieline but serve different purposes. Check wall assembly and lid closure separately.
The assembly from the source code erects the front and back walls, folds in the ears and locks the side walls into the base. The lid closure then engages through the front wall. No gluing is intended for this structure. Whether additional transport securing is needed depends on the shipping workflow and has not been confirmed by calculation.
The tabs engage through slots in the front wall. Material must remain below these slots down to the bottom crease. closureDepth.atMost.slotAboveBottom therefore limits the depth. A larger value may weaken the wall or prevent assembly; check height and closure changes together.
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