External Coupler or female coupler is a part of STÖRNCH SpiraSafe's a well-established system of ventilation fittings. Available in diameters from Ø100mm to Ø400mm, this system delivers significant benefits to installers and end users. Designed without rubber gaskets for direct fitting-to-fitting connections, this coupler matches spiral tube diameters to allow internal fitting insertion.
This external coupler is made with galvanised steel pressed bend, seamwelded and calibrated. Ideal for both commercial and domestic ventilation applications across the UK, this external (female) connector ensures a precise fit within any spiral duct system, making installation quick and efficient.
Key Features
- External/ female coupler for spiral ducting systems
- Made with galvanised steel pressed bend, seamwelded and calibrate
- When used as a part of the system it offers exceptional Class D Air Tightness
- Cost effective, aesthetic and time saving (up to 40% on your labour!)
Applications
- HVAC ducting installations requiring secure connections
- Connecting spiral duct sections and fittings
- Use within spiral tube systems where a female connector is required
| Delivery Terms | ||
|---|---|---|
| Area | Order value | Delivery Charge (Ex VAT) |
| On select Postcodes (Around London, Manchester, Leeds, Bristol, York etc) | Orders Below £110 | £10 |
| On select Postcodes (Around London, Manchester, Leeds, Bristol etc) | Orders Above £110 | Free Delivery |
| On select Postcodes (Scotland, Swansea, Cornwall etc) | Any value | £25 |
