Ducts, dampers & transits · Evidence logic
What is the difference between a tested system and a product?
Short answer
A fire-stopping product is a material or component. A tested or assessed system is the complete configuration in which that product is supported to perform. Buying the right brand does not prove the installation matches the system evidence.
What changes the answer
- substrate and orientation
- service type, size and quantity
- opening dimensions
- product depth, backing and fixing
- sleeves, collars, wraps or insulation
- support conditions
- the permitted variations stated in the evidence.
What to do next
Send the tag, the schedule reference, the drawings you have and photographs of the actual condition. We will tell you what they show, what they cannot, and what else is needed before anyone gives a conclusion.
General information only. A conclusion about a specific condition requires the actual construction, the evidence behind it and the site condition to be reviewed.