This is a 3 metre length of 125mm semi-rigid aluminium flexible ducting hose. Unlike fully flexible corrugated tube, this semi-rigid hose can be bent into shape by hand and holds the position it is formed into — making it suitable for duct runs that require a firm, fixed-shape flexible section rather than a loose, unsupported hose.
Important — Not Part of the Push-Fit Airtight System
This hose is not part of the Luxair self-seal push-fit ducting range. To connect this hose to 125mm rigid ducting pipe, a 125mm collar connector is required (available separately in the Luxair ducting range). Ducting tape should also be used at all joints to ensure an airtight seal — unlike push-fit components, this hose does not self-seal at connections.
Specification
Diameter: 125mm (inner bore)
Length: 3 metres (compressible for transportation)
Construction: Single-layer aluminium with 4mm corrugation depth
Flexibility: Semi-rigid — hand-bendable and shape-retaining
When to Use Semi-Rigid vs Rigid Ducting
Semi-rigid flexible hose is the correct choice where rigid pipe sections cannot be installed due to restricted access, irregular angles, or tight spaces — but where a fully flexible corrugated tube would be too unsupported or loose for the installation. The semi-rigid construction holds the formed shape without additional support, making it particularly useful for short transition sections between rigid duct runs. For maximum extraction efficiency, keep the flexible section as short as possible — the 4mm corrugation depth creates more airflow resistance than smooth-walled rigid pipe.
Ducting Size Guide
Selecting the correct ducting diameter for your motor output ensures maximum extraction performance:
Below 450m³/hr → 100mm (4") ducting
450–750m³/hr → 125mm (5") or 150mm (6") ducting
750–2,000m³/hr → 150mm (6") or 200mm (8") ducting
✓ 125mm semi-rigid aluminium flexible hose — 3 metre length
✓ Hand-bendable and shape-retaining — forms into position and holds without additional support; suitable for firm flexible sections
✓ Not part of the Luxair push-fit airtight system — requires 125mm collar connector and ducting tape at all joints for an airtight seal
✓ 125mm collar connector required — available separately in the Luxair ducting range
✓ Single-layer aluminium construction — 4mm corrugation depth; stated diameter refers to inner bore size
✓ Compressible for transportation — extends to full 3 metre length on installation
✓ Use where rigid ducting cannot be fitted — keep flexible section as short as possible to minimise airflow resistance
✓ Fast UK despatch — express overnight service available
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