Transition | adapter for air ducts | ventilation systems | connection of round and square ducts | D150 | 220×90 mm | white | plastic
Code: 023155A transition adapter designed for reliable duct connection. This universal, durable, and installation-friendly component is ideal for both professionals and home users who need to efficiently organize ventilation systems in residential, industrial, or commercial spaces. High-quality plastic, precise dimensions, and standardized fittings ensure airtightness, stable airflow, and long-lasting performance.
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Technical Specifications
Type: Eccentric adapter for flat → round duct connection
Material: Durable high-quality plastic
Color: White
Decorative color: White
For flat duct: 220×90 mm
Outer diameter (round duct): 150 mm
Mounting diameter: 150 mm
Total depth: 200 mm
Installation area: Ventilation ducts / air channels
Net weight: 0.205 kg
Gross weight: 0.215 kgFunctions
• Eccentric transition: ensures smooth airflow from a flat duct to a round duct without causing turbulence.
• Universal application: suitable for residential and industrial ventilation systems.
• Reduced air losses: precisely engineered shape optimizes air movement.
• Aesthetic solution: white compact adapter blends with most ducts and mounting components.
• Lightweight: easy to install on walls or ceilings.Usage
For household users:
Ideal for upgrading ventilation in kitchens, bathrooms, storage rooms or boiler rooms. Suitable for domestic cooker hoods, fans or heat-recovery systems. Easy to install even without professional tools.For engineers / project managers:
Used in designing mixed ventilation systems where flat ducts must be connected with round ducts. Ensures compliant airflow and minimal pressure losses. Suitable for renovations and new installations.For electricians / installers:
Quick-to-install adapter reduces work time. Standardized dimensions guarantee compatibility with most 150 mm ducts and 220×90 mm channels. Reliable solution for expanding or renovating ventilation systems.Advantages
• High-quality plastic — durable and deformation-resistant
• Eccentric design ensures optimal airflow direction
• Universal compatibility with various ventilation systems
• Fast and simple installation
• Suitable for residential and commercial applications
• Neutral white color — aesthetic appearanceDisadvantages
• Not suitable for duct sizes other than 150 mm / 220×90 mm
• Plastic is not heat-resistant above 80–90°C (unsuitable for hot-air ducts such as fireplaces)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.ManufacturerThis product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.
CE certification means that the product has been evaluated according to the main criteria:
Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purposeCE marking allows this product to:
be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environmentsThe CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.
What does this mean for you as a buyer?
Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions
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Price 81.43 € VAT incl.( 67.30 € VAT excl. )












