SpiroFlex double-wall duct 60/100 mm white, 0.5 m length

SpiroFlex double-wall duct 60/100 mm white, 0.5 m length is a prefabricated concentric duct section intended for use in ventilation, flue and exhaust systems. The component combines an inner and outer cylinder with nominal diameters of 60 mm (inner) and 100 mm (outer) and a fixed length of 0.5 m. Its white finish is suitable for visible installations and for integration into compact duct runs where a concentric flow path is required for safe separation of combustion gases or exhaust air from the surrounding environment.

Advantages

The product provides a ready-made concentric solution that reduces on-site assembly time compared with fabricating double-wall arrangements from separate parts. Its matched inner and outer diameters ensure stable concentric alignment, supporting predictable flow characteristics and straightforward connection to compatible concentric terminals and adapters. The 0.5 m length offers a compact section that can be combined with additional segments to create longer runs while maintaining a consistent profile.

Suitable for

• Concentric ventilation ducts in residential or light-commercial systems
• Flue or exhaust installations requiring separation of inner flue gases and outer ventilation air
• Retrofit applications where a short, modular concentric section is needed
• Connections to concentric terminals, boilers, or balanced flue appliances

Key specifications

• Concentric design with inner diameter 60 mm and outer diameter 100 mm
• Length: 0.5 m
• Color/finish: white
• Material: rigid duct construction suitable for ventilation and flue routing (manufacturer-specified materials)
• Prefabricated concentric section for modular assembly

How to use

Install the SpiroFlex double-wall duct as part of a concentric duct run by connecting its ends to compatible concentric adapters, terminals or additional duct segments. Ensure that connections are secure and appropriately sealed following local ventilation and flue installation regulations. The unit should be supported at regular intervals to prevent stress on connections and to maintain alignment of the inner and outer cylinders. Verify clearances to combustibles and appliance manufacturer instructions when used with flue or boiler systems.

Usage recommendations

Use this 0.5 m concentric section as part of a system design that matches inner and outer diameters to the appliance or terminal; combine multiple sections for longer runs and consult relevant installation standards and appliance documentation to confirm compatibility, clearances and sealing requirements.