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Manthorpe Extension Sleeve (G961)

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.

Product Description & Key Features
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 airflow
  • 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 and easy push fit assembly with the underfloor vents
  • Maintains an unobstructed airflow path through the wall

Colour: Black
Size: 50 x 235 x 215mm
Free Vent Area: 7,000mm²
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 Moulded
Single Person Installation: Yes

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