SpiroFlex smooth stainless steel duct SpiroFlex 150 model, ø150 mm, 0.5 m

SpiroFlex 150 is a smooth stainless steel duct section with a nominal diameter of 150 mm and a length of 0.5 m. Intended for HVAC and extraction systems, this rigid smooth-walled pipe provides corrosion-resistant airflow routing for residential and commercial ventilation, cooker hoods and local exhaust connections where a stainless steel finish is required. The product is designed to deliver a consistent internal diameter for stable airflow and straightforward connection to compatible flanges, collars or couplings.

Advantages

The smooth interior surface reduces turbulence and buildup compared with corrugated alternatives, improving airflow efficiency and simplifying cleaning. Stainless steel construction offers enhanced resistance to corrosion, heat and grease, making the duct suitable for kitchens and environments with higher humidity or aggressive condensates. Its short rigid length enables precise alignment and straightforward installation in confined spaces or modular ventilation runs.

Suitable for

• Domestic and commercial ventilation ducts where a 150 mm diameter is required
• Cooker hoods and kitchen extract systems that require stainless steel components
• Local exhausts and bathroom ventilation with short connection runs
• HVAC installations needing corrosion-resistant, smooth-walled sections

When it may not be suitable

This rigid 0.5 m stainless steel section is not intended for use where long continuous flexible runs are required or where frequent bending is necessary. It also may be unnecessary when a low-cost non-stainless solution is acceptable and corrosion risk is minimal.

Key specifications

• Material: stainless steel, smooth-walled
• Nominal internal diameter: 150 mm
• Length: 0.5 m
• Suitable for ventilation and extraction use
• Rigid section designed for fixed installations and short connection runs

How to use

Measure and plan the ventilation run to ensure the 0.5 m section and other components provide the required clearance and alignment. Join the SpiroFlex smooth stainless steel section to matching 150 mm fittings, collars or adapters using appropriate clamps, seals or silicone as recommended for stainless steel ductwork. Ensure connections are secure and aligned to minimise airflow resistance and prevent leaks. Where the duct passes through walls or panels, use suitable fire- and moisture-rated sleeves or grommets if required by local codes.

What to consider before purchase

• Verify that 150 mm nominal diameter matches existing system fittings and appliances
• Confirm that a 0.5 m rigid section suits the planned routing and available space
• Assess whether stainless steel is required for corrosion, heat or hygiene reasons
• Check compatibility with clamps, collars and wall penetrations used in the installation

Usage recommendations

For best performance, use this smooth stainless steel section as part of a properly designed duct run with minimal abrupt direction changes. Regular inspection and cleaning of kitchen extraction ducts will reduce grease accumulation; use suitable access points for maintenance. When joining sections, follow installer guidelines and local building regulations for sealing and firestopping.