Connector round 125 (socket) airRoxy 02-476 — circular duct coupling Ø125 mm

Connector round 125 (socket) airRoxy 02-476 is a circular duct coupling designed for ventilation and air-duct systems with a nominal diameter of 125 mm. The part functions as a socket sleeve to join two sections of Ø125 mm circular ducting or to connect compatible ventilation components, providing a continuous air passage and ensuring axial alignment between joined elements. The connector is intended for straightforward mechanical coupling without integrated seals or fasteners, suitable for standard residential and light-commercial HVAC applications.

Advantages

The connector offers a simple and space-efficient method to couple Ø125 mm round ducts, enabling quick installation and minimal modification of existing duct runs. Its cylindrical design promotes aligned airflow and reduces the risk of misalignment at joints. The product is compatible with common metal and coated ductwork of matching diameter and supports typical ventilation airflow needs where a basic mechanical connection is acceptable.

Suitable for

• Joining two sections of Ø125 mm circular ductwork
• Connecting fans, grilles or adapters with Ø125 mm spigots
• Residential kitchen, bathroom and laundry ventilation systems
• Light-commercial HVAC installations with standard round ducts

Key specifications

• Type: circular duct coupling (socket)
• Nominal diameter: 125 mm (Ø125)
• Shape: cylindrical sleeve for axial alignment
• Application: ventilation and air-duct systems
• Installation: push-fit mechanical coupling (may require clamps or sealant depending on system requirements)

How to use

Measure and prepare the duct ends to ensure clean, burr-free edges that match the 125 mm nominal diameter. Insert each duct end into the socket coupling until aligned and flush to achieve a continuous internal profile. Depending on site requirements and air-tightness needs, secure the joint externally using appropriate clamps, screws, or duct tape and apply sealant where necessary to reduce leakage. Verify alignment and airflow after installation.

Usage recommendations

For best results, use with ducts and components manufactured to standard Ø125 mm dimensions. If airtight or pressure-rated connections are required, pair the coupling with appropriate gaskets or mechanical fasteners and perform a leakage check following installation.