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Professional Building Supplies£2.08Visit shop Manthorpe Building Products Grey Subfloor Ventilation Airbrick - 9Andquot; X 3Andquot;
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The Manthorpe G930 Airbrick is designed for homeowners, builders, and contractors seeking a reliable ventilation solution for cavity walls and under-floor voids. It delivers an impressive 6450mm2 of airflow, making it safe and compliant for use with gas appliances while protecting the structure from moisture buildup via its integrated water deflectors. While it provides excellent durability and a professional finish, users should note that additional sealing may be required depending on the specific masonry work to ensure a perfect fit.
| Colour | Grey |
|---|---|
| Model Part Number | G930GR |
| Brand | Manthorpe |
Yes, it provides 6450mm2 of airflow, which is suitable for the requirements of many gas appliance installations.
Yes, the units are designed to be stackable to create larger 9 inch by 6 inch or 9 inch by 9 inch ventilation openings.
The G930 is manufactured from durable, high-quality plastic designed for external use.
Use the built-in perimeter mortar key to embed the frame directly into the mortar bed of the brickwork.
The front-mounted grille includes integrated water deflectors specifically designed to prevent rain from entering the building cavity.
The G930 is designed to fit standard brickwork dimensions, typically 9 inches by 6 inches for a single unit.
Check for external debris like leaves or dirt clogging the grille slots and clear them using a brush.
Ensure the mortar surrounding the perimeter key was applied correctly; if necessary, re-point the surrounding area to ensure a secure fix.
Verify that the airbrick is installed with the correct orientation so the water deflectors are at the top.
Installation requires standard masonry skills. The perimeter mortar key should be fully bedded into the mortar joint as the brickwork is laid to ensure the unit is correctly positioned. Ensure that the airbrick is not obstructed by landscaping, gravel, or soil buildup, as this will reduce the effective airflow capacity. To maintain the unit, periodically inspect the front grille to clear away debris, cobwebs, or leaves that might restrict airflow. No specialized cleaning agents are required; a soft brush or a light rinse with water is sufficient to keep the vents clear.
