2 x Cavity Wall Combination Extension Sleeves for 9" x 3" Air Brick Vents G935
Finish
Pack
- Real peopleStaffordshire team · 01889 441 404
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- Free UK deliveryOn orders over £75
What it does
Fitting notes
Delivery & returns
Free UK delivery on orders over £75. Packed and sent from our UK warehouse. Delivery policy Returns policy
- Free UK delivery over £75
- Packed in our UK warehouse
- Real help on 01889 441 404
- Secure checkout
- Trade-name manufacturers
- Free UK delivery over £75
- Packed in our UK warehouse
- Real help on 01889 441 404
- Secure checkout
- Trade-name manufacturers
Questions before you buy
Often bought for the same job
Manthorpe G935 Extension Sleeve
Pack of 2
• Extension Sleeve 9" x 3" for cavity wall ventilators.
• Part number: G935.
• Each pair of extension sleeves adds on a extra 120 - 280mm to the airbrick.
• Designed to fit to the back of a G930 airbrick.
• Further horizontal extension can be added.
• Alternatively it can be stacked to form 9" x 6" or 9" x 9" formations.
• Provides a maximum equivalent area of 6600mm²
• Meets NHBC requirements for the control of condensation in buildings.
• Other ventilation fittings for this product available in our shop.
Use
To provide ventilation for heat producing appliances
To provide background room ventilation
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
Internal finish with open louvre grille
Regulations & Standards
BRE Digest 17
BRE Digest 262
Building Regulations C4
NHBC Standards 5.2BS 5250:2011 Control of Condensation in Buildings