Flat duct reducer AWENTA KP204-29 — 60×204 mm to 60×120 mm

AWENTA KP204-29 is a flat duct reducer designed to connect rectangular ventilation channels with cross-sections of 60×204 mm and 60×120 mm. Intended for HVAC systems, this reducer provides a stable transition between two flat duct sizes to maintain airflow direction and system integrity in residential and commercial ventilation or air extraction installations. Constructed to fit inline ductwork, it is suitable for adjustments and retrofits where duct dimensions change along the airflow path.

Advantages

The reducer offers a compact and space-efficient solution for changing duct dimensions without the need to replace long stretches of ducting. Its geometry preserves airflow continuity and reduces the number of seams and connections compared with multiple adapters. Designed for compatibility with standard rectangular ducts, the unit simplifies installation and helps maintain consistent airflow velocity and pressure across the transition.

Suitable for

• Connecting rectangular ventilation ducts from 60×204 mm to 60×120 mm
• Inline ductwork adjustments during HVAC retrofits or upgrades
• Residential and commercial ventilation and air extraction systems
• Situations requiring a compact transition between different flat duct sizes

Key specifications

• Material: manufactured for HVAC duct compatibility (standard metal/plastic constructions used in flat duct reducers)
• Input cross-section: 60×204 mm rectangular profile
• Output cross-section: 60×120 mm rectangular profile
• Type: flat (rectangular) duct reducer for inline installations
• Application: airflow transition between two flat duct sizes in ventilation systems

How to use

Install the reducer by aligning the larger side with the 60×204 mm duct and the smaller side with the 60×120 mm duct, ensuring secure mechanical connections using compatible clamps, screws or sealing tape as appropriate for the duct material. Confirm that the reducer is oriented to match the airflow direction and that joints are sealed to prevent leaks. Check clearances and support the duct sections to avoid undue stress on the connection and to maintain consistent slope or alignment required by the ventilation layout.

Usage recommendations

Before installation, verify that the reducer dimensions match the existing duct profiles and that surrounding space allows for proper connection and sealing. Use appropriate sealants or tape rated for HVAC applications to reduce air leakage, and consider adding support brackets if the reducer connects sections with a weight or length that may stress the joint. For systems requiring strict acoustic or thermal control, combine with suitable insulation or dampers as needed.