The following points should be kept in mind when choosing ducting or planning ventilation systems:
The length of ducting and number of bends will effect performance and should therefore be kept to a minimum.
Long runs of flexible duct are not recommended for use on cooker hoods.
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.
Ducts passing through an unheated roof void 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 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.
Ductwork diameters are normally internal diameters - if unsure contact us
For a full list of ducting (including galvanized and stainless steel) or colours please contact our sales line on 08456 44 6001 or to discuss your personal requirements, contact us.
The best method is to use a jigsaw with a quality blade suited to cutting thin sheet metal.
Mark your pipe in multiple places to provide a cutting guide / line - Drill a small hole to allow you to insert the blade and cut away from you.
Alternatively you can use a hacksaw, but for large ducting or quantities this can be somewhat frustrating. Obviously take suitable safety precautions.
We do offer a cut to size service if you know your measurements and we can ship these ready cut to save you the time and hassle - just let us know quantities / diameter / length etc.
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