Subfloor Ventilation Cavity Sleeve - Black - G935
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Product Information
Full details
The Manthorpe G935 Combination Cavity Sleeve is an essential component for professional builders and DIY enthusiasts looking to ensure effective subfloor ventilation in cavity or solid brick walls. It provides a robust airflow capacity of 6,600mm while integrating seamlessly with the Manthorpe G930 airbrick system. While its telescopic design offers excellent versatility, users should note that it is specifically engineered for a cavity range of 50mm to 100mm, which may require supplementary adapters for thicker wall constructions.
All features
| Colour | Black |
|---|---|
| Model Part Number | G935 |
| Brand | Manthorpe |
Extended Product Information
FAQs
Can I use the G935 with non-Manthorpe airbricks?
The G935 is specifically designed for integration with the Manthorpe G930 range. While it may fit other brands, we recommend sticking to the G930 to ensure the airflow specifications are maintained.
What is the maximum cavity width this unit supports?
The G935 telescopic sleeve is designed for cavities ranging from 50mm to 100mm.
How do I create a 9x9 configuration?
The sleeves are designed to be stackable, allowing you to combine them to meet the dimensions of a standard 9x9 airbrick configuration.
Is the material weather-resistant?
Yes, it is constructed from durable materials meant for the harsh environment of a cavity wall, providing long-term resistance to typical weather conditions.
Does the sleeve come in colors other than black?
The G935 is currently supplied in black, though it is concealed within the wall structure upon final installation.
Troubleshooting
Airflow obstruction or reduced ventilation
Check the external airbrick for external blockages like garden debris or overgrowth and clear the vent area.
Difficulty fitting the sleeve into a wide cavity
Verify that the cavity width does not exceed the maximum 100mm threshold; if necessary, consult the manufacturer for compatible extensions.
Pros and Cons
Pros
- Flexible telescopic adjustment for variable cavity widths
- High ventilation capacity of 6,600mm
- Stackable configuration supports multiple airbrick sizes
- Durable construction suitable for long-term integration
- Internal baffle reduces draughts and water penetration
Cons
- Limited to 100mm maximum cavity width without additional components
- Requires professional bricklaying precision for optimal alignment
- Black colorway may require painting to match specific exterior aesthetics
Setup, Compatibility & Care
To install, ensure the G935 is properly aligned during the bricklaying process. The sleeve should be fitted directly behind the G930 airbrick. When stacking for larger apertures, ensure the joining seams are flush to prevent mortar ingress during construction. For long-term maintenance, perform visual inspections of the external airbrick once per year to ensure the vents remain free of debris, such as leaves or spider webs, which could obstruct the 6,600mm airflow capacity. No lubrication or mechanical maintenance is required for the telescopic mechanism once installed.