Roof fans

plastic roof fans – reliable external ventilation

HLU’s roof fans are designed for vertical intake and installation outside the building. They can also be installed horizontally with the appropriate accessories. They are especially suitable for use in buildings without a ventilation plant and are used in laboratories (fume hoods), schools and research facilities, among others. The exhaust air is blown vertically upwards, minimising the deposition of aggressive substances on the roof.  The internal motor is separated from the air flow and therefore does not come into contact with the aggressive conveyed medium. Rainwater that falls into the discharge opening exits at the bottom of the housing, thus preventing water from entering the piping connected to the suction opening. For use in potentially explosive areas, we can also supply the HF roof fans in an explosion-proof version for zones 2 and 1 in accordance with ATEX.

Roof fans

HF D 15/17

Application
  • can be used in all applications with small and medium air volumes
  • ideal for extraction from fume hoods in buildings without a ventilation plant
  • optionally suitable for installation in and extraction from ATEX zone 2
Features
  • volume flow from 50 to 3500 m³/h
  • at a maximum pressure difference of 1400 Pa
  • available in 6 nominal diameters from 110 to 315 mm intake diameter
Online shop
Volume flow 50 to 3.500 m³/h
Pressure difference 1.400 Pa
Nominal diameters 6 nominal diameters from 110 to 315 mm
Operating temperature 0 – 40°C
Impeller material PPs
Drive systemdirect drive
Atexoptionally suitable for installation in and extraction from ATEX zone 2
Design fitted as standard with repair switch or explosion-proof terminal box
Connection options flange

Advantages:

  • corrosion resistant
  • weatherproof
  • safe rainwater drainage
  • compact design
  • easy installation on flange
  • comprehensive range of accessories
  • motor mounted outside the airflow
  • use of different motors (explosion-proof motors) possible

The following accessories are recommended for this product:

Roof fans

HF D 16

Application
  • volume flow from 500 to 8000 m³/h
  • at a maximum pressure difference of 1400 Pa
  • available in 3 nominal diameters from 315 to 400 mm, for special materials 3 nominal diameter from 160 to 250 mm
Features
  • Volumenstrom von 500 – 8.000 m³/h
  • bei einer maximalen Druckdifferenz von 1.400 Pa
  • in 3 Nennweiten von 315 – 400 mm, für Sonderwerkstoffe 3 Nennweiten von 160 – 250 mm lieferbar
Online shop
Volume flow500 to 8.000 m³/h
Pressure difference 1.400 Pa
Nominal diameters 3 nominal diameters from 315 to 400 mm, for special materials 3 nominal diameter from 160 to 250 mm
Operating temperature 0 – 40 °C
Impeller material PPs
Drive system direct drive
Atexoptionally suitable for installation in and extraction from ATEX zone 2 or ATEX zone 1 in electrically conductive version
Design fitted as standard with repair switch or explosion-proof terminal box, shaft gap with seal
Connection options flange

Advantages:

  • corrosion resistant
  • weatherproof
  • safe rainwater drainage
  • compact design
  • easy installation on flange
  • comprehensive range of accessories
  • motor mounted outside the airflow
  • use of different motors (explosion-proof motors) possible

The following accessories are recommended for this product:

Roof fans

HF D 13

Application
  • can be used in all applications with large air volumes
  • ideal for collected exhaust air and direct indoor exhaust air without duct systems
  • optionally suitable for installation in and extraction from ATEX zones 2 and 1
Features
  • volume flow from 4000 to 40000 m³/h
  • at a maximum pressure difference of 1000 Pa
  • available in 5 nominal diameters from 500 to 1000 mm intake diameter
Online shop
Volume flow 4.000 to 40.000 m³/h
Pressure difference 1.000 Pa
Nominal diameters 5 nominal diameters from 500 to 1000 mm
Operating temperature0 – 40°C
Impeller material PPs
Drive system direct drive
Atexoptionally suitable for installation in and extraction from ATEX zone 2 or ATEX zone 1 in electrically conductive version
Design fitted as standard with repair switch or explosion-proof terminal box, shaft gap reduced to minimum with felt ring seal
Connection optionsflange

Advantages:

  • corrosion resistant
  • weatherproof
  • safe rainwater drainage
  • compact design
  • easy installation on flange
  • comprehensive range of accessories
  • motor mounted outside the airflow
  • use of different motors (explosion-proof motors) possible

The following accessories are recommended for this product:

Roof fans

SDR 45/63

Application
  • can be used in all applications with small and medium air volumes
  • ideal for extraction from fume hoods and chemical storage cabinets in laboratories
  • optionally suitable for installation in and extraction from ATEX zones 2 and 1
Features
  • volume flow from 150 to 4000 m³/h
  • at a maximum pressure difference of 1000 Pa
  • available in 4 nominal diameters from 160 to 315 mm intake diameter
Volume flow 150 tp 4.000 m³/h
Pressure difference1.000 Pa
Efficiency levelup to 71 %
Nominal diameters 4 nominal diameters from 160 to 315 mm
Operating temperature 0 – 60 °C
Impeller material PP-gf, PPs
Drive system direct drive
Atexoptionally suitable for installation in and extraction from ATEX zone 2 or ATEX zone 1 in electrically conductive version
Connection options pipe or flange connection to suction opening

Advantages:

  • corrosion resistant
  • weatherproof
  • safe rainwater drainage
  • motor mounted outside the airflow
  • use of different motors (explosion-proof motors) possible

The following accessories are recommended for this product:

Roof centrifugal fans

SDR 63

Application
  • can be used in all applications with small and medium air volumes
  • ideal for extraction in the food sector (slaughterhouses, logistics centres) or for demanding industrial applications
  • optionally suitable for installation in and extraction from ATEX zones 2 and 1
Features
  • volume flow from 1500 to 30000 m³/h
  • at a maximum pressure difference of 900 Pa
  • available in 7 nominal diameters from 355 to 710 mm intake diameter
Volume flow1500 to 30.000 m³/h
Pressure difference 900 Pa
Efficiency level up to 71%
Nominal diameters 7 nominal diameters from 355 to 710 mm
Operating temperature 0 – 60 °C
Impeller materialPP, PPs, PVC, GRP, CFRP, steel coated
Drive system direct drive
Atexoptionally suitable for installation in and extraction from ATEX zone 2 or ATEX zone 1 in electrically conductive version
Connection optionsv

Advantages:

  • corrosion resistant
  • weatherproof
  • safe rainwater drainage
  • motor mounted outside the airflow
  • use of different motors (explosion-proof motors) possible

The following accessories are recommended for this product:

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