||Actual dimensions (mm)
||Space requirements (mm)
For 4" (100mm) extractor fans or for low power cooker hoods
Up to 250m³/hour
|System 100 - Round
|System 100 - Rectangular
||110 x 54
||116 x 60
For medium extraction rates or if available depth is limited
Up to 500m³/hour
|System 125 - Round
|System 125 - Rectangular
||150 x 70
||156 x 76
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
|System 204 - Rectangular
||204 x 60
||210 x 66
|System 150 - Round
|System 150 - Rectangular
||180 x 90
||186 x 96
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
|System 225 - Rectangular
||234 x 29
||240 x 35
i-sells.co.uk supplies Plastic Ducting from 100mm to 150mm diameter in white from stock throughout the UK and worldwide. Other special duct materials, finishes and size components are available, along with a full range of fittings and ancillary components - please call to discuss your specific custom requirements. Remember we also supply conventional extractor fans and energy efficient heat recovery systems .
Note: Round Ducting: Our straight lengths of plastic duct round tubes are 'female' i.e. duct fittings such as bends and reducers are 'male' and generally slip inside the duct tube. To connect two 'male' duct ends together use a 'female' cut length of straight duct / tube.
Note: Rectangular Ducting: Our straight lengths of rectangular plastic ducting are 'male' i.e. duct fittings such as bends and reducers are 'female' and generally slip over the straight duct. To connect two 'female' duct ends together use a 'male' cut length of straight ducting.
- The length of ducting and number of bends will effect performance and should therefore be kept to a minimum.
- Long runs of flexible ducting are not recommended for use on cooker hoods - rigid ducting should be used.
- Plastic Ducting components have a simple push fit connection. Flat channel can be easily cut to length using a hacksaw.
- When installing a rectangular to round adaptor, it is important that the flat side is fixed uppermost. The flap operation of a grille/fan would otherwise be obstructed.
- When installing a circular through-the-wall duct a core drill can be used.
- Ducting passing through an unheated areas such as roof voids should be insulated to minimise condensate formation and must include a condensation trap and means of running off condensate.
- Vertical ducts should be fitted with a condensation trap for low power systems and a weather proof cowl of sufficient free area for the air volume.
- Horizontal ducts should fall away from the fan unit.
- Choice of the right system will ensure quiet and efficient operation of fans and or cooker hoods
- All internal system parts manufactured with self-extinguishing materials to meet fire retardency standard UL94V2
- Plastic ductwork materials do not corrode leading to a clean and long lasting life
- Wall outlets are made with UV stable materials to delay colour fade
- The choice of ducting system will depend on a number of factors including: the power of the cooker hood or fan to be connected to, its location, the configuration of the duct run, the space available and others.
- Maximum working temperature for rigid PVC ducting is 60oC
For a full list of ducting (including galvanized and stainless steel) or colours please contact our sales line on 0208 463 9696 or to discuss your personal requirements, email us by clicking here.
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