When ventilation ducting is installed and enters or exits a fire compartment in a house apartment or multi-storey building it may be necessary to meet Document B of the Building Regulations to ensure that any fire is contained in one area and delayed from spreading for a time to allow the occupants of the building to escape. If ventilation ducting penetrates a Fire Rated separating element of construction such as a wall ceiling or floor slab then a Fire Stop needs to be fitted around the ducting at the position of the penetration to maintain the fire resistance of the separating element.
The requirement for Fire Stops falls into two broad categories comprising Partition Walls and Masonry Walls and Floors.
Kair can offer a range of Fire Stops for these applications using Kair FireWraps (FW) Kair Galvanised Metal Sleeves (FWS) and Kair FireCuffs (FC). The most appropriate European Standard for penetrations in Partition Walls is BS EN 1366-3: 2009 and all of our partition products have been tested to this standard under the most stringent test conditions with both ends of the ducting left open giving the most realistic simulation of actual installed conditions.
For Masonry Walls and Masonry or Concrete Floors we have test evidence to BS 476 Parts 20 & 22.
Kair FireWraps are available in both rectangular and round sizes from 100mm round to 300mm x 29mm Rectangular. For the full range search Kair FireWrap .
|Round System (mm)||100|
|Product Type||Fire Wrap|
|Packaged Weight (Kg)||0.184|
|Packaged Length (mm)||365|
|Packaged Width (mm)||5|
|Packaged Height (mm)||100|
Last Orders for delivery before Christmas
Please call us on 020 8463 9696 or place orders online by midday Thursday 20th December 2018.
Will be limited only to online queries, please allow up to 48 hours for a response.
All orders are subject to availability. Please call us on 020 8463 9696 to check availability or likely despatch date.
View full delivery dates here
SIDCUP SHOWROOM STORE (Get Directions)
Closes: 4:30pm Thirsday 20th December.
Opens: 8:00am Wednesday 2nd January 2019
|Shipping Method||Under £100*||Over £100*|
4 to 7 Days (Orders under £25 inc VAT)
4 to 7 Days (Orders over £25 inc VAT)
2 to 4 Days (Interlink or TNT)
Next Working Day Delivery+
* 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.
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|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 |
| System 125|
| System 150|
|System 204||System 225|
|System 220||System 300|
|Actual Dimensions (mm) Space Requirements (mm)|