BagCheck compares the three exterior measurements in the best physical orientation. It does not invent a missing axis label or assume that unknown protrusions are included.
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Same exact SKU page gives 10.3 lb in feature copy and 9.4 lb in the specification table; leave weight unknown. This optional-field source conflict does not block identity or explicit exterior geometry. Expansion is advertised but no complete expanded exterior envelope is published; only the standard envelope is executable. Manufacturer labels H × L × W are retained; BagCheck uses the same three extents as H × W × D (L becomes display width, W becomes display depth). Fit checking permits rotation and does not alter any measurement.