Round duct and fittings

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Certification body: RISE Research Institutes of Sweden AB | Certification (formerly SITAC )

Application: Designed for use in ventilation systems in apartment buildings, industrial plants and public utility objects including hospitals.

Products: Alnor round Spiral duct system

Alnor round spiral ducts and ductwork elements are manufactured according to Swedish Technical Approval no. 0103/07 issued by RISE (formerly SP Certifiering).

Certification body: TÜV Rheinland Group

Application: Designed for use in ventilation systems in apartment buildings, industrial plants and public utility objects including hospitals.

Products: Round ventilation ducts and fittings, access doors, round roof elements

Certification body: The Building Information Foundation RTS sr

Reference document: the Classification of Indoor Climate 2008 and the Cleanliness Classification of Air-handling Products, General Instructions

Products: segmented fittings: bends, flat reductions, reducers, collar saddles, saddles tees, t-pieces, y-pieces, male couplings, coupling with gasket, lateral pressed saddles, setoffs, regulating dampers, adjusting and shut-off dampers, back draught dampers, sliding dampers, multi-blade dampers

Certification body: The Building Information Foundation RTS sr

Reference document: the Classification of Indoor Climate 2008 and the Cleanliness Classification of Air-handling Products, General Instructions

Products: pressed bends, reducers, t-pieces, take-offs

Certification body: The Building Information Foundation RTS sr

Reference document: the Classification of Indoor Climate 2008 and the Cleanliness Classification of Air-handling Products, General Instructions

Products: spiral ducts

Hygienic Certificate No: HK/K/0437/01/2017 valid till 2022-07-04; HK/K/0437/02/2017 valid till 2022-07-04; HK/K/0437/03/2017 valid till 2022-07-04

Certification body: National Institute of Public Health - National Institute of Hygiene

Application: ventilation and air-conditioning systems in residential housing, public utility building, hospitals and industrial facilities.

Products: Spiral and rectangular ducts and fittings made of galvanized steel, as well as intake and exhaust louvres, grilles, air dampers, roof cowls.

Hygienic Certificate No: HK/K/0437/04/2017 valid till 2022-07-04; HK/K/0437/05/2017 valid till 2022-07-04; HK/K/0437/06/2017 valid till 2022-07-04

Certification body: National Institute of Public Health - National Institute of Hygiene

Application: ventilation and air-conditioning systems in residential housing, public utility building, hospitals and industrial facilities.

Products: Spiral and rectangular ducts and fittings made of stainless steel steel, as well as intake and exhaust louvres, grilles, air dampers, roof cowls.

Hygienic Certificate No: HK/K/0437/07/2017 valid till 2022-07-04; HK/K/0437/08/2017 valid till 2022-07-04

Certification body: National Institute of Public Health - National Institute of Hygiene

Application: ventilation and air-conditioning systems in residential housing, public utility building, hospitals and industrial facilities.

Products: Spiral and rectangular ducts and fittings made of aluminium as well as intake and exhaust louvres, grilles, air dampers, roof cowls.

Certification body: Accredited Testing Laboratory - SP Technical Research Institute of Sweden

Test object: Circular duct system - sheet thickness 0.5 mm, 0.6 mm, 0.7 mm, 1.2 mm.

Reference document: standard EN 12237:2003 ”Ventilation for buildings – Ductwork – Strength and leakage of circular sheet metal ducts”.