BagCheck compares the three recorded measurements in the best physical orientation. It does not invent a missing axis label or assume that unknown protrusions are included.
Source
Where these details came from
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Evidence
First-party manufacturer product page (aersf.com). The published axis labels are preserved exactly as printed on the page — Length, Width, Depth, in that printed order — and dimensionsCm records those three printed values in the same printed order. The page states no axis semantics, so dimensionSemantics stays UNSPECIFIED: no axis has been renamed, re-ordered, or inferred from numerical magnitude. The published weight (2.73 lbs) is retained as a research observation only: the publisher does not state the quantity basis, so emptyWeightKg is null. Evidence packet research/aer-cpp2-24l-material-variants-20261010-v3 (byte-cited, independently accepted).