Description
🌟 Key Features
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Seamless compatibility with VELUX rigid sun tunnels (TWR, TLR, TCR) designed for tile, slate, or flat roof installations.
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No screws required—uses Flexi‑Loc™ clips for easy, tool‑free installation.
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Highly reflective interior—silver-coated surface that preserves over 98 % of light transmission down the tunnel (mirrors the standard rigid tube tech).
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Modular design—combine up to multiple sections to reach a total tunnel length of 6 m maximum, for roof-to-ceiling distances above ~1.85 m (≈ 6 ft).
✅ Benefits at a Glance
| Benefit | Description |
|---|---|
| Increased daylight reach | Extends the reach of your tunnel beyond the standard roof‑ceiling distance. |
| Flexible configuration | Mix 60 cm and 120 cm sections to hit your exact distance required. |
| Faster install | Installation is swift with clip connectors—no drilling or hardware fuss. |
| Consistent brightness | The reflective inner surface minimizes light loss even over long runs. |
🧩 Installation Notes
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Recommended when roof-to‑ceiling height exceeds ~1.85 m.
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Combine seamlessly with standard rigid tunnel kits; telescoping sections stack end-to-end.
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Keep full tunnel assembly (including main tube plus extensions) under the 6 m limit to retain optimal daylight performance.
🔧 Use Case Scenarios
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Lofty attic installations where standard lengths fall short.
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Rooms with high ceilings such as vaulted family rooms, kitchens, or hallways.
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Long tunnels that span multiple attic bays or require subtle directional adjustments (with elbows).
📏 Typical Length Setup Examples
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For a 2.5 m ceiling height, a standard 1.65 m rigid tunnel plus one 60 cm or one 120 cm ZTR extends coverage easily.
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For 3 m+ total vertical runs, mix two or three 120 cm segments to maintain a smooth, reflective straight run.
🔍 Why Choose ZTR 0K14?
If you’re installing a VELUX rigid sun tunnel and face a tall roof-to-ceiling distance or want to deliver maximum daylight over a long run, ZTR 0K14 extension sections are the designed solution. They deliver flexible, efficient installation while maintaining high light transmission—without requiring tools or screws.




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