The Courbi Combo Spiral L/T 320N is a light-type corrugated (spiral) conduit produced from U-PVC, supplied in a 50 m pack sold at a per-metre price. Its Φ20 size — 20 mm outer diameter, 15.3 mm inner diameter — accommodates larger wiring runs in domestic and residential electrical installations. The integrated galvanised steel-wire cable guide speeds up cable threading without additional tools.

The conduit is self-extinguishing and does not transmit flame. It complies with application standards EN 61386-1/2008 and EN 61386-22+A11:2010, and carries classification code 2221. It is suitable for both surface mounting and flush (masonry-routed) installation.

Key Features

• Corrugated (spiral) U-PVC construction — pliable and configurable
• Integrated galvanised steel-wire cable guide for fast cable installation
• Φ20 size: outer diameter 20 mm, inner diameter 15.3 mm
• Colour: grey
• Self-extinguishing — does not transmit flame
• Supplied in 50 m packs (price per metre)

Product Benefits

• 320 N mechanical strength rating handles light indoor load conditions without deformation
• Built-in cable guide eliminates the need for a separate draw wire on each run
• Corrugated spiral form allows bending around corners without additional fittings
• 15.3 mm inner diameter accommodates larger cable bundles than Φ16 variants
• Self-extinguishing material limits fire spread in wall cavities and trunking
• Compliant with EN 61386-1/2008 and EN 61386-22+A11:2010 for European electrical installations

Technical Specifications

• Model: Courbi Combo Spiral L/T 320N
• Type: Φ20
• Outer Diameter (D1): 20 mm
• Inner Diameter (D2): 15.3 mm
• Material: U-PVC
• Colour: Grey
• Pack Length: 50 m
• Mechanical Strength: 320 N (Light type)
• Impact Resistance: 1 kg / drop height 100 mm at -5°C
• Minimum Temperature: -5°C
• Maximum Temperature: +60°C
• Dielectric Resistance: 2 kV / 15 min
• Insulation Resistance: 100 MΩ
• Classification Code: 2221
• Standards: EN 61386-1/2008, EN 61386-22+A11:2010

Why You'll Love It

• The integrated steel-wire guide means no separate draw wire is needed — pull cables through immediately after installation
• Pliable spiral form bends to route around obstacles without additional elbows or fittings
• Per-metre pricing from a 50 m pack allows precise cost planning for any project size
• Package includes: 1× Courbi Combo Spiral L/T 320N with wire cable guide Φ20, 50 m