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  •   Galvanized steel air duct | for ventilation | ventilation systems | D400mm | straight | rigid | 2m | silver | 400CP0,5O2000
      Galvanized steel air duct | for ventilation | ventilation systems | D400mm | straight | rigid | 2m | silver | 400CP0,5O2000 1

    Galvanized steel air duct | for ventilation | ventilation systems | D400mm | straight | rigid | 2m | silver | 400CP0,5O2000

    Code: 34406
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    Galvanized steel duct D400 mm, designed for air supply, exhaust, and general ventilation systems. This is a straight, rigid, 2-meter long galvanized steel duct, suitable for use in residential, commercial, industrial, and technical facilities where a sturdy, durable, and standard ventilation component-compatible air duct section is required.
  • Product description

    Galvanized steel duct D400 mm – straight, rigid, 2 m, for ventilation systems

    Galvanized steel duct D400 mm, designed for air supply, exhaust, and general ventilation systems. This is a straight, rigid, 2-meter long duct made of galvanized steel, suitable for use in residential, commercial, industrial, and technical facilities where a sturdy, durable, and standard ventilation component-compatible air duct section is required.

    Main idea:
    This duct is used for straight ventilation runs where efficient airflow through a Ø400 mm diameter system is needed. The galvanized steel construction provides strength, corrosion resistance, and stability during installation and operation.
    Diameter
    Ø400 mm
    Length
    2 m
    Material
    Galvanized steel
    Type
    Straight, rigid

    Operating principle

    The galvanized steel duct forms a straight air duct section through which air moves within a ventilation system. It can be used in both air supply and exhaust runs, depending on the specific system purpose and project requirements.

    A smooth internal surface helps reduce airflow resistance, while the rigid construction maintains the duct's shape during installation and operation. The duct connects with other ventilation system components, such as couplers, elbows, tees, reducers, dampers, fans, or other Ø400 mm components.

    What are the benefits of a rigid galvanized steel duct?
    A rigid galvanized steel duct is suitable when a sturdy and stable ventilation run is required. It deforms less than flexible ducts, maintains its shape better, and is convenient for longer straight sections in residential, commercial, and industrial facilities.

    Technical parameters

    Product type Galvanized steel duct
    Model / code 400CP0,5O2000
    Type Straight, rigid duct
    Purpose For ventilation systems
    Material Galvanized steel
    Color Silver
    Outer diameter Ø400 mm
    Mounting diameter Ø400 mm
    Length 2 m
    Wall thickness 0.5 mm
    Operating temperature From -40 °C to +60 °C
    Connection Using connecting elements: couplers, elbows, tees, reducers, and other Ø400 mm components
    Construction Rigid, straight, round duct
    Application area Residential, commercial, industrial, and technical ventilation systems

    Where is it used?

    • Residential ventilation systems – for installing air supply or exhaust runs.
    • Garages, workshops, and storage rooms – for ventilation and air extraction.
    • Boiler rooms, basements, and technical rooms – for air extraction or supply solutions.
    • Commercial buildings – administrative offices, shopping centers, warehouses, and service facilities.
    • Industry – in production facility ventilation, air supply, or exhaust systems.
    • HVAC systems – for installing, modernizing, or extending duct runs.

    Practical installation example

    For example, a D400 mm galvanized steel duct is installed in a technical room or production zone as a straight air exhaust section. At one end, it can be connected to a fan, damper, or tee, and at the other, to another duct section, elbow, or air distribution element.

    The 2-meter length allows for quickly forming a straight run, and the 0.5 mm thick galvanized steel wall provides rigidity and helps maintain the duct's geometry during installation.

    Pros

    • Efficient airflow – smooth internal surface helps reduce airflow losses.
    • Galvanized steel – better corrosion resistance than untreated steel.
    • Rigid body – the duct maintains its shape better and is less prone to deformation.
    • Ø400 mm diameter – suitable for ventilation runs requiring higher airflow.
    • 2 m length – convenient for forming longer straight duct sections.
    • Universal application – suitable for residential, commercial, and industrial systems.
    • Compatible with standard components – can be connected with couplers, elbows, tees, and other Ø400 mm elements.
    • Temperature resistance – operating temperature from -40 °C to +60 °C.

    Cons / limitations

    • Rigid duct – not suitable for complex curved runs without additional elbows or transitions.
    • Heavier than flexible ducting – may require stronger mounting during installation.
    • Requires additional connecting elements – couplers, hangers, elbows, tees, or sealing solutions.
    • Not for use as a standalone terminal element – finishing the system may require grilles, end caps, dampers, or other components.
    • Requires precise route planning – Ø400 mm duct takes up more space than smaller diameter solutions.

    Safety and installation notes

    Duct systems must be installed according to the ventilation design, airflow requirements, fan parameters, run length, joint airtightness, and mounting conditions.

    • Use appropriate connecting elements during installation – couplers, elbows, tees, hangers, and sealing agents.
    • The duct run must be securely fastened, especially when using larger diameter and longer ducts.
    • Protect the duct from mechanical damage that could deform the cross-section and impair airflow.
    • During cutting or installation, beware of sharp metal edges and use appropriate protective gear.
    • For system airtightness, additional gaskets, sealing tape, or other specific solutions may be required.

    Quick selection guide

    Galvanized steel duct D400 mm, 2 m – a suitable choice when a straight, rigid, and sturdy ventilation duct section is required. It can be used in residential, commercial, or industrial facilities where efficient airflow and compatibility with Ø400 mm ventilation components are needed.

    Diameter
    Ø400 mm
    Length
    2 m
    Wall
    0.5 mm
    Material
    Galvanized steel
    Suitable when you need:
    • to install a straight ventilation run section;
    • to use a sturdy, rigid galvanized steel duct;
    • to convey higher airflow through a Ø400 mm system;
    • to connect the duct with couplers, elbows, tees, or other components;
    • to use the duct in residential, commercial, or industrial systems.
    Check before installation:
    • does the Ø400 mm diameter match the planned system;
    • is the 2 m length suitable for the intended run section;
    • are additional connecting elements needed;
    • will an airtight connection be ensured;
    • are sufficiently sturdy hangers and supports planned;
    • are airflow and fan capacity matched with the duct run.
    Important reminder:
    A ducting system will only operate efficiently when the diameter, run length, number of elbows, fan capacity, and joint airtightness are matched correctly. An incorrectly selected or poorly sealed duct can reduce airflow.

    FAQ – frequently asked questions

    What is this D400 mm duct for?
    It is for ventilation and HVAC systems, to install air supply or exhaust runs.
    What is the duct diameter?
    The duct has an outer and mounting diameter of Ø400 mm.
    What is the duct length?
    The duct length is 2 m.
    What material is the duct made of?
    The duct is made of galvanized steel.
    How is this duct connected?
    The duct is connected using appropriate Ø400 mm connecting elements, such as couplers, elbows, tees, reducers, or other ventilation system components.
    Is this duct flexible?
    No. It is a straight and rigid duct. For curved runs, elbows or other formable ventilation components must be used.
    What is the operating temperature?
    The specified operating temperature is from -40 °C to +60 °C.

    Sturdy Ø400 mm ventilation run section for efficient airflow

    The galvanized steel duct D400 mm helps form a reliable, rigid, and efficient air supply or exhaust run in ventilation systems.

    Due to its 2 m length, 0.5 mm wall thickness, galvanized steel construction, and compatibility with standard Ø400 mm ventilation components, this duct is a practical choice for residential, commercial, and industrial ventilation systems.

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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