Assembly or educational occupancy: Class A finishes, and panels within reach must be impact-resistant.
What Class A means
Interior finishes are tested under ASTM E84 (UL 723) for flame spread and smoke development. Class A means a flame spread index of 0–25 and smoke developed index of 450 or less. Our cores and standard fabrics are rated Class A; check the spec sheet of any customer-supplied fabric.
| Class | Flame spread index | Smoke developed |
|---|---|---|
| A | 0–25 | ≤ 450 |
| B | 26–75 | ≤ 450 |
| C | 76–200 | ≤ 450 |
Suspended products
Clouds and baffles must not obstruct sprinkler spray patterns. As a rule of thumb, keep the tops of products at least 18 in below sprinkler deflectors, or follow NFPA 13 and the local authority's guidance.
Mounting
Use mechanical fasteners (Z-clips, impaling clips or cable kits) rather than adhesive alone, especially overhead and in exits.
Codes vary by jurisdiction. Confirm requirements with your local building official or design professional.