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.

SKU: L03499 Category:

Product Description

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

Delivery Options

Please note, we only deliver to Stoke on Trent and the surrounding areas. Click here to view our delivery map and prices.
If you live outside this area please feel free to contact us.