AWENTA KP75-20 variable-section duct connector 75×150 mm to ø125 mm, white

AWENTA KP75-20 variable-section duct connector provides a compact transition between a rectangular 75×150 mm duct and a round Ø125 mm conduit. Finished in white, the connector is intended for ventilation systems where a change of cross-section or geometry is required. It is designed for use in residential and light commercial HVAC installations to maintain airflow continuity and enable reliable mechanical connection between differing duct shapes.

Advantages

The connector offers a stable, low-profile transition that maintains air passage with minimal obstruction. Its variable-section design reduces the need for custom fabrication when joining rectangular ducts to circular pipes. The white finish provides a neutral appearance suitable for exposed installations and simplifies integration with existing piping and ductwork. The component is compatible with standard ventilation accessories and can be fitted using common sealants or clamps to ensure airtight joints.

Suitable for

• Transitioning rectangular 75×150 mm ducts to round Ø125 mm ventilation pipes
• Residential ventilation systems and single-family HVAC projects
• Light commercial ventilation where space or geometry requires section change
• Retrofit projects that adapt rectangular ducts to round ducting or fans

Key specifications

• Rectangular side: 75×150 mm
• Round side: Ø125 mm
• Variable-section transition between rectangular and circular cross-sections
• Finish: white
• Material: suitable for standard HVAC ductwork environments (non-corrosive finish)

How to use

Measure and mark the duct and pipe locations to ensure proper alignment before fitting the connector. Attach the rectangular side to the ductwork and the round side to the circular conduit, using appropriate clamps, tape, or sealant to create airtight joints. Ensure the connection is aligned with airflow direction and supported where necessary to avoid stress on adjacent ducts. After installation, inspect the joint for gaps and secure as needed to maintain system efficiency.

Usage recommendations

Use compatible duct seals and mechanical fasteners to achieve airtight connections and prevent vibration. Verify that the connector dimensions match existing ducts and the Ø125 mm pipe before installation. For installations involving exhaust or high-humidity air, check material compatibility and provide adequate support to prevent sagging or unloading of seams.