Which dimensions should you enter for a packaging concept?

Find the object behind each number

Before copying a number, identify the object, state, axes and units. Product size, usable inside space, the assembled outside and a flat template are different records. A supplier’s “length” may not be the axis you call “width.” Use arrows tied to the actual object rather than guessing from the order of three numbers.

In this invented exercise, pourer P4 stands upright. Its overall envelope, including the spout, is 52 mm across the front, 46 mm front-to-back and 168 mm high. Supplier record B1 gives a closed box’s external size as 65 × 70 × 180 mm in its own stated axis order. Both records are fictional. Although those outer values exceed the product values, they do not establish usable inside space or prove that the spout clears the lid.

Confirm the supplier’s measurement convention

Pacdora’s dieline generator documentation treats dimensions, paper thickness and material as separate structural inputs. Its interface is an example of why box size alone does not describe every construction requirement. It does not establish a universal convention for what another supplier means by width, length or depth.

Ask the selected supplier whether its quoted size is internal or external, what assembled state it describes and which axis comes first. Use an annotated drawing or photograph with arrows to eliminate uncertainty. Keep the original specification beside any converted units. Do not subtract an assumed wall thickness from an outside measurement and record the result as confirmed usable space.

Build a measurement-basis sheet

Give each value its own source, revision and status. If an annotated supplier record later names its axes differently, map them explicitly before entry. A verified 6.5 cm measurement can be written as 65 mm, but converting units does not change external size into internal space. Keep the original value as well as the converted one.

Use the concept to discuss proportions, then verify the structure

In Packaging studio, choose the supported structure and read the fields actually shown for that type. Record how your confirmed axes map to them in the external brief. Do not assume a tube’s diameter or a flat bag’s fields describe the same cavity as a carton. A concept can help discuss proportions while the physical basis remains pending.

If B1’s axes or basis are unclear, ask the supplier before treating the concept as a sized production design. Keep any exploratory entry explicitly provisional. CartVisual’s parameter SVG and generated image do not compute a validated cavity, usable volume, allowances or product fit.

Pacdora lists dimensions and paper thickness as separate inputs. Its box-design FAQ still directs printer or manufacturer review of final dimensions, stock, bleed and tolerances. These are its workflow descriptions, not a universal axis convention or an CartVisual fit test.

Keep changes traceable through the physical sample

Give the supplier the basis sheet, selected concept and real item information. Ask for a sample suited to checking the proposed construction. Compare the assembled result with the dimensions actually quoted, then check closure and ordinary packing using the real product. Record which measurement changed if the first sample needs revision; a new box size can affect both fit and artwork.

Use the insert-fit guide when internal supports need their own geometry and removal checks. Use the mockup-versus-dieline guide for deliverable roles. Here the approval artifact is the labeled measurement sheet, so a future editor knows what the numbers mean before adjusting the design.