Start with the family
Acoustic grands have horizontal strings and soundboards. Acoustic vertical instruments include spinet, console, studio and full upright models. Digital/hybrid models need model-specific guidance because cabinet appearance is not decisive.
Baby grand is still grand
Baby grand is a smaller grand category, not a separate construction family. Manufacturers do not all use one universal length cutoff. Share the actual model and dimensions.
A useful quote starts with useful details
Provide the piano type, manufacturer and model if known, pickup and destination cities, and access at both properties. For an acoustic grand, share its length. For a vertical or cabinet digital, share cabinet dimensions if available. If identification is uncertain, describe it rather than guessing its weight.
Identification without disassembly
Photographs of the whole instrument and visible model information can help. Do not open the cabinet, remove parts or inspect the action.