What is required for a firestop product to be labeled?

For a firestop product to be labeled properly, it must pass specific performance criteria set by a recognized agency. This requirement ensures that the product has been evaluated and meets standardized testing protocols for performance in preventing the passage of fire, smoke, and gases through openings in walls and floors. Certifications from agencies such as Underwriters Laboratories (UL) or Intertek (ETL) validate that the product has been rigorously tested and meets established safety standards. This labeling provides assurance to architects, contractors, and building officials that the product will perform as intended in a fire scenario.

The other options do not meet the necessary criteria for labeling. While visual inspection and approval from local fire departments are important for compliance and safety checks, they do not guarantee that the product has undergone the thorough testing required for labeling. Similarly, while installation by certified professionals is essential for effective performance, it does not directly pertain to the product’s labeling. The key component for labeling is the successful passing of performance criteria as determined by recognized testing entities.