Spiral duct is manufactured in 3 metre lengths as standard. Non-standard lengths are available on request.
Compatible fittings and installation products
Spiral duct is normally installed with compatible fittings and supports. The guidance below explains common components that may be required for a complete installation.
- Male Joining Collar – Male collars are male. These are used to join one length of spiral to another
- Elbows – These fittings are male and do not require a collar to connect to spiral ductwork
- Curved Shoe – These shoes are used to branch off a length of spiral. The ‘Parent Size’ is the diameter size of the spiral duct you wish to branch off
- Saddle – These saddles are used to branch off a length of spiral. The ‘Parent Size’ is the diameter size of the spiral duct you wish to branch off
- Cap End – Cap ends are used to cap off ductwork. If ordering for spiral please order a ‘Male Cap End’
- Cowl – Cowls are used at ductwork discharge points. Their male connection does not require a joining collar.
- Reducer – These fittings are male and are used to reduce ductwork. Reducers are male at both ends and therefore do not require a joining collar to connect to spiral duct.
- Attenuators – These are spigotted as standard. The spigots are male and do not require a collar to connect to spiral
- Volume Control Dampers – All types of dampers have male spigots and therefore do not require a joining collar to connect to spiral
- Split/Suspension Rings – These are used to support spiral ductwork
