Polyaire Neck Adaptor – Square to Round
The Polyaire Neck Adaptor – Square to Round is a purpose-built HVAC transition fitting that connects square duct openings to round flexible ducting. Manufactured by Polyaire, Australia's leading duct systems brand, this adaptor provides a secure, airtight connection for residential and light commercial air conditioning installations.
Key Features
- Transitions seamlessly from square duct outlet to round flexible duct
- High-quality construction for a firm, airtight seal
- Compatible with standard Polyaire flexible ducting systems
- Easy push-fit installation — no tools required
- Durable polymer material resists warping and cracking
Applications
- Ducted air conditioning supply outlets
- Connecting plenums and air handlers to flexible round duct
- New installations and duct system retrofits
Engineered for a reliable connection in your ducted HVAC system, the Polyaire Neck Adaptor Square to Round ensures consistent airflow and long-term performance.
Sizes Available
This adaptor is available in 40 configurations: square openings ranging from 150x150mm up to 565x565mm, transitioning to round spigot diameters from 150mm up to 500mm, plus three square-to-square reducer options (450x450mm down to 150x150mm, 225x225mm, or 375x375mm). Select your required square and round dimensions from the size options on this page.
