SpiroFlex double-wall duct 60/100 mm white, 0.25 m

SpiroFlex double-wall duct 60/100 mm, white, length 0.25 m is a concentric two-wall flue and air intake element designed for compact ventilation and boiler installations. The product combines an outer and an inner tube in a single profile to safely carry combustion gases away while allowing fresh air to be drawn in through the annular space. Its short 0.25 m length makes it suitable for tight installation zones and for connecting appliances that require a 60/100 mm concentric interface.

Advantages

The SpiroFlex concentric duct provides a compact and space-saving solution for routing exhaust and supply air within one assembly. The double-wall construction increases safety by separating combustion gases from building spaces while maintaining a controlled air intake path. The white finish offers a neutral appearance for visible sections and the rigid design facilitates straightforward alignment and secure connections with compatible concentric components. The product is suitable for standard installations where a short, durable concentric connection is needed.

Suitable for

• Connecting condensing boilers and water heaters with a 60/100 mm concentric outlet
• Short duct runs in compact plantrooms, kitchens or utility spaces
• Integrating with ventilation systems that use concentric flue arrangements

Key specifications

• Concentric double-wall design with inner and outer duct
• Nominal diameters: inner 60 mm, outer 100 mm
• Length: 0.25 m
• Colour: white
• Material: rigid flue/duct construction suitable for combustion gas exhaust and air intake

How to use

Fit the SpiroFlex double-wall duct between compatible concentric connectors on the appliance and the adjacent ducting or terminal. Ensure the inner and outer tubes are correctly aligned with the corresponding mating components and secure joints according to the appliance and system manufacturer instructions. Check for proper sealing and support the duct to prevent stress on connections. Installation must follow applicable national and local regulations for flue and combustion air systems.

Usage recommendations

Use this concentric duct for short connection distances and where space constraints prevent separate exhaust and air intake runs. Verify compatibility with the boiler or heater model and follow the appliance manufacturer's guidelines for clearances, sealing, and maintenance intervals.