Ferno FDU Double Stop Descent Device
Ferno FDU Double Stop Descent Device
The Ferno FDU is a friction control, double stop descent device made for emergency escape, personal rescue, rescue operations and specialised rope work. It releases its load gradually as the handle is moved towards the central position, so descent stays smooth and fully under control.
The double stop mode is the safety net: if a panic grab happens the device locks, and then it unlocks progressively as the handle is released, so a sudden grip does not cause a sudden drop. The FDU-200 is supplied without the friction rack and measures 250 x 135 x 45 mm with the handle stored, weighing 730 g. The friction rack version adds friction for heavier two person rescue loads. The FDU has been extensively tested and is certified to AS/NZS 4488.1:1997 with 11mm rope. Browse more descenders, the wider rescue range, or the full Ferno range. It pairs with the ISC D5 descender and the Mark 1 Plus abseil device.
Key Features
- Friction control double stop descent device
- Load releases gradually as the handle moves to centre
- Double stop locks on a panic grab, unlocks progressively
- Optional friction rack for two person rescue loads
- For emergency escape, personal and team rescue
- Certified to AS/NZS 4488.1:1997 with 11mm rope
- FDU-200 measures 250 x 135 x 45 mm and weighs 730 g
Specifications
| Brand | Ferno |
| Type | Double stop friction descent device |
| Rope | 11 mm |
| Standard | AS/NZS 4488.1:1997 |
| Use | Escape, personal rescue, rescue operations |
| FDU-200 | Without friction rack |
| FDU-100 | With friction rack for two person loads |
| FDU-200 size and weight | 250 x 135 x 45 mm with the handle stored, 730 g |
Product Documents
How does the double stop work?
As you move the handle towards the central position the FDU releases its load gradually for a controlled descent. If a panic grab happens the device locks, then unlocks progressively as the handle is released, so a hard grip never causes a sudden drop.
What is the friction rack for?
The friction rack adds extra friction so the FDU can handle heavier rescue loads of up to two people. The FDU-100 comes with the rack, while the FDU-200 is supplied without it.
What rope and standard does it use?
The FDU is certified to AS/NZS 4488.1:1997 with 11mm rope, and it has been extensively tested for emergency escape, personal rescue and rescue operations.
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