| No. of circulation lines | 2 |
| Material type circulation lines | Barrier Flexmaster |
| Dimensions circulation lines | 22x16mm |
| Fire rating | Meets BS476: part 7: 1997 Class 1 fire rating when applied to insulation |
| Insulation thickness | 13mm |
| Total outer diameter | 75mm |
| Outer finish | Black PVC Tape |