| Intumescent | Yes |
| Color | Metallic grey |
| Temperature resistance temperature range | -20°C - 100°C |
| Approvals | BS, UL, AS, FM, LPCB |
| Min joint width | 3 |
| Base Materials | Concrete, Drywall, Masonry |
| Collar outside diameter | 75 mm |
| Collar outside diameter | 101.7 mm |
| Pipe diameter - range | 65 - 78mm |
| Storage and transportation temperature - range | -5 °C - 50 °C |
| Expansion temperature | >180 °C |
| Complementary Products | Fastening hook |
| Additional Product Info | The CP 643 N firestop jacket consists of a pre-assembled cylindrical metal housing, containing inserts of intumescent materials |