airRoxy asymmetrical side reducer 80×100×110×120×125×150 mm model 02-504

airRoxy asymmetrical side reducer model 02-504 provides a stepped transition between multiple duct diameters — 80, 100, 110, 120, 125 and 150 mm — in a single component. It is designed to fit ventilation and HVAC ductwork where non-uniform or offset connections are needed, allowing airflow to be routed between different circular sections without complex fabrication. The reducer is intended for use in systems that require compact, reliable diameter changes while maintaining airflow continuity.

Advantages

The asymmetrical stepped design integrates six common diameters into one compact fitting, reducing the number of separate adapters and junctions in a duct run. Manufactured for ventilation applications, the reducer simplifies installation by providing ready-made transitions between pipes of different sizes and helps preserve airflow characteristics through smooth internal contours. Its configuration supports flexible routing where space constraints or offset outlets prevent direct coaxial connections.

Suitable for

• Connecting circular ducts with differing diameters in HVAC ventilation systems
• Routing airflow around offsets or obstructions in ductwork
• Temporary or permanent transitions during system upgrades or retrofits

Key specifications

• Stepped diameters: 80 mm, 100 mm, 110 mm, 120 mm, 125 mm, 150 mm
• Asymmetrical side reducer geometry for offset connections
• Designed for circular duct systems and ventilation use
• Single-piece transition combining multiple size steps

How to use

Select the step that matches each duct end and secure the reducer to the ducts using appropriate duct clamps, screws, or sealants compatible with the duct material. Ensure ends are seated fully and that joints are sealed to prevent air leakage. When routing air through an asymmetrical transition, check for proper support and alignment to avoid undue stress on connected ducts. Verify airflow direction and install any required insulation or vibration isolation where system conditions demand it.

Usage recommendations

For best performance, use the reducer in applications with compatible duct materials and diameters, and seal all joints to maintain system efficiency. Inspect connections after initial operation and during routine maintenance to ensure seals and fastenings remain secure.