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Sigma Island

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Sigma is, with its curved glass shelf and tight feel, an elegant steel kitchen hood for all forms of ventilation.

The product is not for sale through our website, only through our retailers.



Sigma is 90 cm wide. The efficient grease filter comes with a cleaning indicator and can be easily washed in the dishwasher.

Sigma is also available as a wall-mounted hood.

Additional information

90 cm

Ventilation forms

Dut out, Recirculation

Metal / Colour

Steel with glass

Energy class


Extraction m3/t

300/480/640 (B 700)

Noise level dBA

54/64/69 (B 71)


4 x LED

Outlet dimensions mm


Tips and advices

The diameter, length and number of bends in the duct affects the efficiency of your extraction.
Often, the actual extraction is half of the motor capacity, due to poor installation. Use ducting that creates the least possible resistance. This means using ducting that is as smooth as possible inside with as few bends possible. In the case of flexible ducting, make sure the ducting is taught. Try to keep the distance of the ducting as short as possible. In situations where the distance is large and requires lots of bends, it’s best to get a hood with the highest possible extraction to compensate for the loss.

The recommended distance above the hob is 50–75 cm. It will be easier to cook if the hood is raised slightly.
NB: The distance above a gas hob must be at least 75 cm due to the risk of fire.

Please check your local building regulations for clearance height restrictions for your hob from your hood.




Here you can download documents in PDF format.

Product Sheet: Click here

User- and mounting instructions – Duct out and recirculation: Click here
User- and mounting instructions – Balanced ventilation: Click here
User- and mounting instructions – Sentral ventilation: Click here

Can’t read PDF documents? Download free Adobe Acrobat Reader here


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Røros Metall AS
Stamphusveien 11
7374 Røros, Norway
(+47) 72 40 94 00

Opening hours other weeks:
Monday – Friday: 08:00 – 16:00
Saturday – Sunday: Closed

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