Duct Connector UBBINK AERFOAM EPE 125 BEND 45 – 125 mm 45° foam-insulated elbow

UBBINK AERFOAM EPE 125 BEND 45 is a 45° foam-insulated elbow for 125 mm round ventilation ducts. The component is designed to connect and redirect circular duct runs while limiting thermal transfer and reducing condensation risk within residential and light commercial HVAC and ventilation systems. Its compact shape allows installation in confined spaces where a gradual change of direction is required without exposing the duct interior to temperature fluctuations.

Advantages

The elbow integrates an EPE foam insulation layer that improves thermal resistance and helps maintain air temperature through the bend. Its 45° angle provides a compromise between airflow efficiency and space-saving routing, producing lower pressure losses than sharper turns. The product's round connection profiles ensure a tight fit with standard 125 mm ducts, simplifying mechanical connection and sealing. Materials are chosen for lightweight handling and straightforward installation by HVAC professionals or competent DIYers.

Suitable for

• Redirecting 125 mm round duct runs in confined attic, ceiling voids, or service shafts
• Insulated HVAC and ventilation systems in residential buildings
• Light commercial ventilation applications where condensation control is required
• Retrofitting or modifying existing duct layouts to improve route efficiency

Key specifications

• Nominal diameter: 125 mm
• Angle: 45°
• Insulation type: EPE foam
• Shape: round elbow
• Application: air distribution and duct routing for ventilation systems

How to use

Align the elbow with the existing 125 mm round duct ends and slide or clamp the connections together according to the duct system's joining method. Ensure that mating surfaces are clean and free of debris before making the connection. Apply appropriate sealing tape, gasket, or clamp to secure an airtight joint and minimize leakage. When routing through confined spaces, verify adequate clearance for the elbow's outer dimensions and avoid compressing the insulation layer to preserve thermal performance.

Usage recommendations

For optimal performance, keep joints sealed and support the duct run to avoid undue stress on connections. Inspect the insulation layer during installation to ensure it remains intact; damaged insulation can reduce thermal resistance and increase condensation risk. Use compatible clamps or duct sealants recommended for round metal or plastic ducts, and follow local ventilation codes and best practices for airflow and installation.