When ordering 304 stainless steel cabinets, ask which components the grade statement covers. Bodies, fronts, shelves, fasteners and moving hardware may have different specifications. The useful document is a component schedule linked to the quotation, rather than an isolated claim that the kitchen is made from 304.
Type 304 is a widely used austenitic stainless steel grade. The grade designation helps define composition, but it does not define sheet thickness, finish, cabinet construction or product certification. Those items still belong in the specification.
Chlorides from salt, pools and some cleaners can increase pitting or staining risk. Type 316 is commonly considered for additional resistance in many chloride environments because it contains molybdenum. Severe conditions may require specialist advice beyond a simple 304-versus-316 choice.

A related layout to review is Custom 304 Stainless Steel Outdoor Kitchen Cabinet System. Use the product page to discuss the proposed dimensions and configuration.
Surface contamination, heat tint, rough finishing, crevices and trapped water can reduce performance. Require compatible tools, controlled finishing and a maintenance method suited to the site.
Mark each visible and concealed component on a cabinet section. Ask the supplier to identify the material beside each mark and explain any substitutions. Keep the response with the accepted drawing and finish sample. If the kitchen will be exposed to salt, cleaning chemicals or persistent moisture, have the supplier review that exposure before you approve the material schedule.

A related layout to review is FW-MK-001 cabinet layout. Use the product page to discuss the proposed dimensions and configuration.
No. Similar finishes can be used on different metals and grades. Establish the material through the supplier's specification and appropriate traceable documentation, not through color, gloss or a catalog photograph.
Use the checks above to mark the unresolved items on your drawing or quotation. Send that marked-up version with the selected product reference so the next discussion can focus on the actual configuration.