Catalogue photographs cannot distinguish similar bodies; visible details do not prove material or performance either. Compare offers by model code and verifiable technical records.
Match dimensions and variant
Take external and internal dimensions, empty weight and lid orientation from drawings for the same model variant. Check that measurement points are defined alike; a dimensional difference alone does not explain wall construction.
Inspect construction and closure
Use a section drawing or sample to inspect body joints and how the catch and gasket seat. Ask the supplier to match the construction and gasket variant to product documentation.
Verify accessories physically
If shelves or plates are needed, compare interface dimensions and part codes, then test fit on a sample if possible. Similar colour or outer shape does not establish shared accessories.
If insulation performance is a decision criterion, request comparable test conditions and reports. Do not rank results from different test conditions directly; record evidence gaps in the purchasing note.
