Intumescent Fire Dampers - 1 Hour Fire Resistance Tecfire intumescent dampers (air transfer grilles) have been designed and are manufactured to prevent the spread of fire through ducts or apertures in fire resisting elements such as partitions and doors. Tecfire dampers are produced from PVC slats filled with a high performance intumescent materi...
Tecfire intumescent dampers (air transfer grilles) have been designed and are manufactured to prevent the spread of fire through ducts or apertures in fire resisting elements such as partitions and doors.
Tecfire dampers are produced from PVC slats filled with a high performance intumescent material which are assembled to form a matrix. In the event of a fire the
slats and framing components swell to many times their original thickness, fusing together to form a non combustible mass which prevents the passage of hot
smoke and gases.
Tecfire dampers have been tested and assessed by the Warrington Fire Research Centre and maintained their integrity for a minimum of 60 Mins.
Construction
Tecfire dampers consist of a sodium silicate intumescent
material encapsulated within 40mm x 6mm PVC
extrusions which are assembled to form a matrix,
mortised jointing of the damper slats to the intumescent
outer components eliminates any need for any metal
componetry. (Circular units have a pair of outer
aluminium rings). Each damper is manufactured 2mm
less than the corresponding duct or aperture size to
provide clearance during installation.
Tecfire dampers are available up to a maximum size of
600mm x 600mm in 25mm increments.
Installation
Ducts - Tecfire dampers should be secured within
ducting using not less than 4 self tapping screws (on
circular units two self tapping screws must be used to
fix each aluminium ring).
Doors and Partitions - Ensure that cutting an
aperture in the door will not detract from the fire integrity
of the door. Contact the manufacturer to establish
maximum size and optimum position. Cut the aperture
to the required size with a gap all around of 3mm. Apply
intumescent mastic to the inside faces of the aperture.
Fit the damper into the aperture and ensure that it is
positioned equidistant from each face and parallel to
both faces of the door. Fit retaining 25mm wood screws
through the pre-drilled holes in damper outer uprights
into door. Clean off surplus mastic and ensure outer
edge of damper is fully sealed. Position pressed steel
cover grilles centrally over both faces of the damper and
fix with 25mm wood screws.
Maintenance
Tecfire dampers contain no moving parts and require
little or no maintenance. Units may be dusted or cleaned
using a vacuum cleaner or brush.
Advantages
| Product Type | Fire Block |
| Manufacturer Product Code | FB-RECT-500X500 |
| Quick Search: | QS1242 |
| Shipping Method | Under £100* | Over £100* |
| Economy: 4 to 7 Days (Orders under £25 inc VAT) 4 to 7 Days (Orders over £25 inc VAT) |
£2.99 £4.99 |
FREE FREE |
| Courier: 2 to 4 Days (Interlink or TNT) |
£7.99 | FREE |
| Next Day: Next Working Day Delivery+ |
£24.00 |
£24.00 |
* Usually £200+vat
+ Order before noon for Next Working Day Delivery for items in stock
Excludes Highlands, Islands, and Certain Postcodes.
Please Note: Ducting tubes over 200mm in diameter and 3 metres in length may incur additional shipping charges.
See the full delivery information here: Full delivery information
Your question will be sent to a member of our team. We'll email you the answer and post it on this page. If your question is about an order you already placed, please use our Contact Form to reach the customer service team.
| Ducting System | Actual dimensions (mm) | Space requirements (mm) | Airflow mm² |
For 4" (100mm) extractor fans or for low power cooker hoods up to 250m³/hour | |||
|---|---|---|---|
| System 100 - Round | 100 | 106 | 7,854 |
| System 100 - Rectangular | 110 x 54 | 116 x 60 | 5,940 |
For medium extraction rates or if available depth is limited up to 500m³/hour | |||
| System 125 - Round | 125 | 131 | 12,272 |
| System 125 - Rectangular | 150 x 70 | 156 x 76 | 10,500 |
For 6" (150mm) extractor fans or for high power cooker hoods up to 500m³/hour & above | |||
| Megaduct 220 - Rectangular | 220 x 90 | 227 x 97 | 17,968 |
| System 204 - Rectangular | 204 x 60 | 210 x 66 | 12,240 |
| System 150 - Round | 150 | 156 | 17,671 |
| System 150 - Rectangular | 180 x 90 | 186 x 96 | 16,200 |
For a shallow space, such as ceiling voids or under floor, where high extraction rates are not needed: | |||
| System 300 - Rectangular | 308 x 29 | 314 x 35 | 8,932 |
| System 225 - Rectangular | 234 x 29 | 240 x 35 | 6,786 |
| System 100 Round/Rectangle  | System 125 Round/Rectangle  | System 150 Round/Rectangle  | System 204  | System 225  |
System 220  | System 300  | |||
Actual Dimensions (mm)  Space Requirements (mm)  | ||||
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