9" x 3" Cavity Wall Extension Sleeve for Air Draught Ventilator Vent
Extension Sleeve for Cavity Vent
9 x 3 inch
Extension Sleeve for Cavity Wall ventilators
Each adaptor adds on another 200mm to sleeve length.
Adaptors can be added on to each other for extra reach.
Extendable cavity Sleeves Available in our shop.
Meets requirements for British Gas.
To provide ventilation for heat producing appliances.
To provide background room ventilation.
Individual ventilation sets can supply up to maximum appliance rated input of 29kW (99,000 Btu/h)
For new build, refurbishment and remedial work.
Features & benefits
Aesthetically pleasing and a simple to install modular system.
Excellent airflow properties.
Independently tested by BRE.
Offers reduction of draughts and light compared to basic through wall ventilation.
Cowl or air brick version available.
Internal baffle with aerodynamic design improves airflow.
Internal finish with open louvre grille (options with Hit & Miss available to special request, but not suitable for heat producing appliances.
Equivalent area tested to BS EN13141-1:2004
Compliant with BS 5440-2:2000, BS 5871-3:2005 & BS 493:1995
Complies with Building Regulation 2000 Approved Documents F (2004 edition) & J (2002 edition)
Complies with ‘The Scottish Building Standards’ Technical handbooks
Manufactured to BS EN ISO 9001:2008
Meets the requirements of British Gas
Satisfies NHBC Standards 2008
Material & colour choice
Manufactured by injection moulding in HIPS/Polypropylene
External brick/cowls in buff, brown, terracotta & white
Internal grilles are white as standard