Which document specifically describes a product's specifications?

The specification sheet is the document that specifically outlines a product's specifications. This includes detailed information such as dimensions, materials, performance criteria, and other technical details that are crucial for understanding and manufacturing a product. The specification sheet serves as a comprehensive reference for engineers, designers, and manufacturers to ensure that all aspects of the product meet the necessary standards and requirements.

Blueprints, while providing a visual representation of a product or structure, do not typically contain comprehensive specifications. They focus more on the design layout rather than the specific details of materials and performance. Construction plans provide an overall roadmap for building projects, including layout and structural details, but again, do not offer the depth of information found in a specification sheet. A design portfolio showcases a collection of projects and works but is more about aesthetic and conceptual representation than technical specifications. Thus, the specification sheet stands out as the primary document for detailed product specifications.