Square Intumescent Air Transfer Fire Block - 350mm
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Delivery and Warranty
Standard UK Mainland Delivery
If you are not in a rush, then we offer standard delivery and your order should be with you between 2-3 working days.
£6.95
Next Working Day Delivery
Place your order before 12pm Monday to Thursday and receive your order the next working day. Orders placed on Friday before 11am will be processed and delivered on Monday. (Excludes Sunday’s and Public Holidays)
£15.95
Nominated Day Delivery
We know sometimes you will need an order on a particular date in the future. Simply select this option at checkout and add what date you would like to receive the order. We will then contact you to confirm the date. If you need to change this order date then please contact us ASAP.
£15.95
Northern Ireland Delivery
We offer a flat fee rate for Northern Ireland orders, and all are 5-7 working day lead times.
£29.95
Scottish Highlands & Islands Delivery
We only offer a flat fee rate for Scottish Highland & Islands orders, and all are 5-7 working day lead times.
£45.95
Channel Islands Delivery
We only offer a flat fee rate for Channel Islands orders, and all are 5-7 working day lead times.
£45.95
Product Details
Specifications
Product specifications
| Type | Intumescent air transfer fire block |
| Dimensions (H x W x D) | 350mm x 350mm x 38mm |
| Fire rating (timber doors) | Up to 60 minutes |
| Fire rating (walls and ducts) | Up to 120 minutes |
| Free area | Approx. 60% |
| Mounting | Doors, walls, ducts |
| Finish | Black/grey (other colours on request) |
| Warranty | 1 Year Manufacturer |
Summary
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The 350mm Square Intumescent Air Transfer Fire Block is a high-performance air transfer grille for doors, walls and ducts that gives good airflow and quiet operation in normal use, then seals the aperture in a fire. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.
Slim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.
- 350 x 350mm
- Intumescent fire block
- Up to 120 min in walls and ducts
Suitable for
- Vertical and horizontal ducted ventilation systems
- Airflow control and fire protection
Specifications
| Type | Intumescent air transfer fire block |
| Dimensions (H x W x D) | 350mm x 350mm x 38mm |
| Fire rating (timber doors) | Up to 60 minutes |
| Fire rating (walls and ducts) | Up to 120 minutes |
| Free area | Approx. 60% |
| Mounting | Doors, walls, ducts |
| Finish | Black/grey (other colours on request) |
| Warranty | 1 Year Manufacturer |
Product Description
The 350mm Square Intumescent Air Transfer Fire Block is a high-performance air transfer grille for doors, walls and ducts that gives good airflow and quiet operation in normal use, then seals the aperture in a fire. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.
Slim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.
- 350 x 350mm
- Intumescent fire block
- Up to 120 min in walls and ducts
Suitable for
- Vertical and horizontal ducted ventilation systems
- Airflow control and fire protection
Specifications
| Type | Intumescent air transfer fire block |
| Dimensions (H x W x D) | 350mm x 350mm x 38mm |
| Fire rating (timber doors) | Up to 60 minutes |
| Fire rating (walls and ducts) | Up to 120 minutes |
| Free area | Approx. 60% |
| Mounting | Doors, walls, ducts |
| Finish | Black/grey (other colours on request) |
| Warranty | 1 Year Manufacturer |
Delivery & Returns
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What size is it?
350mm x 350mm x 38mm.
What fire rating does it give?
Up to 60 minutes in timber doors and up to 120 minutes in walls and ductwork.
How does it work?
The intumescent core expands in heat to seal the aperture; there are no moving parts.
What is the free area?
Approximately 60%.
Where can it be fitted?
Timber fire doors, partition walls and ducts.
Should it be used in humid areas?
No, it should not be used in areas of high or constant humidity.