Extension Sleeve for Underfloor Adjustable Telescopic Cavity Wall Vents G961
by Homesmart
Original price
£11.59
-
Original price
£11.59
Original price
£11.59
£11.59
-
£11.59
Current price
£11.59
Manthorpe G961 Extension Sleeve
Pack of 1
Extension Sleeve 9" x 3" for cavity wall ventilators.
Part number: G961.
Can be used for vertical or rear horizontal extension.
Designed to be used with G960 Manthorpe telescopic vents.
Each unit extends the under floor ventilator a further 150mm vertically or 185mm horizontally.
Further extension can be added.
Provides a maximum equivalent area of 6600mm² airflow.
Meets NHBC requirements for the control of condensation in buildings.
Key Features
6600mm² airflow.
Allows ventilation to an underfloor void.
Allows a 2 course per extension.
Regulations & Standards
BRE Digest 17.
BRE Digest 262.
Building Regulations C4.
NHBC Standards 5.2.
BS 5250:2011 Control of Condensation in Building.