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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Exact selected SKU R4179; official snapshot sources/8cb5ce52bb706dd4.json, SHA256 1f77ce9cb42fe9683e392fbdf4c409a5ddcf9fc22ec2c5ec22fdc8581164921c. Model label distinguishes capacity/material/mounting, not colour. Published dimensions are not a measured packed/compressed maximum or a guarantee that hardware is included. Roll/fold closure and attached hardware must fit when packed. No compression allowance inferred. Manufacturer load rating is not empty weight or an airline allowance.