The G961 Vertical Extension Sleeve has been designed for use with the Manthorpe range of telescopic underfloor ventilators. Each extension sleeve allows the vent to reach a further two brick courses vertically. The sleeve can also be fitted to the base of the underfloor vents to provide a longer horizontal extension through larger cavities.
- 6,600mm2
- Allows ventilation to deeper underfloor voids
- Additional depth and cavity span
- Allows an extra 2 courses vertically per unit.
- Provides an extra 150mm horizontal extension through wider cavities
- Quick & easy push fit
- Maintains an unobstructed airflow path through the wall.
| Colour | Black | Size | 50 x 235 x 215mm |
|---|---|---|---|
| Free Vent Area | 7000mm2 | Vertical Extension | 150mm |
| Vertical Span | 2 extra courses | Horizontal Span | Extra 180mm |
| Packaging | 20 per box | Box Weight | 4.0kg |
| Material | Polypropylene | Manufacturing process | Injection Moulding |
| Single Person Installation Possible | Yes |
