What type of specification describes a specific product from a manufacturer?

The correct choice identifies a proprietary specification, which is specifically designed to reference a particular product or brand from a manufacturer. In a proprietary specification, the contractor or designer is indicating that a certain item must be used, ensuring that the specified materials meet desired standards of quality, performance, and aesthetic requirements as established by the original manufacturer.

This approach is often utilized when there is a unique product that exhibits specific qualities or benefits that are essential for the project. By specifying a certain manufacturer, the designer controls the outcome and is able to ensure consistency, reliability, and alignment with the project’s needs.

In contrast, performance specifications focus on the intended results or functions without dictating the specific products to be used, while descriptive specifications offer detailed descriptions of the characteristics that the products must have. Combination specifications, as the name suggests, blend elements of both performance and descriptive specifications but do not pinpoint a specific manufacturer’s product.