Duct elbow connector 90° Ø125 mm airRoxy 02-471

The Duct elbow connector 90° Ø125 mm airRoxy 02-471 is a metal ventilation fitting designed to change airflow direction by ninety degrees in circular duct systems with a nominal diameter of 125 mm. Intended for residential and light-commercial HVAC installations, this elbow maintains continuity of round ducts and provides a compact solution where space or routing requires an angular transition. The smooth internal profile reduces turbulence and supports efficient airflow when integrated into exhaust, supply, or recirculation duct runs.

Advantages

This 90° elbow is made from durable metal that resists deformation and maintains shape under normal HVAC operating conditions. Its standard nominal diameter ensures compatibility with other Ø125 mm circular duct components, simplifying installation and reducing the need for custom adapters. The elbow’s geometry is optimized to provide a consistent cross-section through the bend, which helps to limit pressure loss and noise compared with improvised or non-matching fittings.

Suitable for

• Changing airflow direction in residential ventilation systems
• Light-commercial HVAC duct routing and retrofits
• Connecting or extending Ø125 mm round ducts in supply or exhaust lines
• Installation in confined spaces where a right-angle turn is required

Key specifications

• Angle: 90° change in airflow direction
• Nominal diameter: 125 mm for circular ducts
• Material: metal construction suitable for typical HVAC conditions
• Application: for use in supply, exhaust, and recirculation ductwork
• Connection type: designed to fit standard Ø125 mm round ducts

How to use

Position the elbow between two lengths of Ø125 mm round duct, ensuring ends are fully seated into the connector for a secure mechanical fit. Secure joints using appropriate HVAC fasteners such as sheet metal screws and, where required by local practice, seal with duct sealant or foil tape to maintain airtightness. Support the elbow and adjoining ductwork with hangers or clamps to prevent stress on the joint and to maintain alignment. Verify airflow direction and clearance around the elbow before finalizing installation.

Usage recommendations

For optimal system performance, avoid sharp kinks or additional abrupt changes in direction immediately upstream or downstream of the elbow. If noise or pressure loss is a concern, consider adding short straight duct runs before and after the elbow to stabilize airflow. Follow local building codes and manufacturer guidance for fastening and sealing methods.