UL Installation Instructions
| II 1½ hr Fire Damper | 1½ hour Fire Damper Installation Instructions | |
|---|---|---|
| II 3 hr Fire Damper | 3 hour Fire Damper Installation Instructions | |
| II S3 Fire Damper | S3 True Round Fire Damper Installation Instructions | |
| II CRD | Ceiling Radiation Fire Damper Installation Instructions | |
| II MR | MR Fire/Smoke Damper Installation Instructions | |
| II Fire/Smoke | Fire/Smoke Damper Installation Instructions | |
| II (SS) Fire/Smoke | Stainless Steel Fire/Smoke Damper Installation Instructions | |
| II FSOS | One Side Retaining Fire/Smoke Damper Installation Instructions | |
| II Smoke Damper | Smoke Damper Installation Instructions | |
| II (SS) Smoke Damper | Stainless Steel Smoke Damper Installation Instructions |