
Room illumination with natural daylight
Flexible light transmitting tube with two diameters: 350 and 550 mm
Suitable for pitched roofs from 15-60° with high profile roofing up to 120 mm
Option to extend tube with SLM modules
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Installed in the slope of a pitched roof, the SFD‑H/L light tunnel effectively illuminates interiors that lack access to natural light. It is designed for roofs with pitches between 15° and 60°, covered with high‑profile roofing materials up to 120 mm in height. It is an ideal solution wherever installing a traditional window is impossible or uneconomical. The flexible light‑transmitting tube allows light to be carried over several meters, improving interior brightness and user comfort. Additionally, the light tunnel provides illumination to the space directly beneath the external installation point, such as an attic or loft.
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The flexible light‑transmitting tube allows you to easily bypass structural elements such as beams, installations or wiring, which significantly simplifies installation. The integrated flashing ensures a tight fit to the roofing material, eliminating the risk of leaks. The entire system is lightweight, discreet and blends harmoniously with the roof surface. It can be used both in single‑family homes and public buildings. The ceiling‑mounted light diffuser combines practicality with aesthetics — gently illuminating the interior and giving it a warm, pleasant character.
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The specially designed light‑transmitting tube, connected to the ceiling module with sealing tapes, effectively prevents contaminants and unwanted reflections from entering the system. This solution increases overall efficiency, ensuring optimal use of natural daylight. The entire construction is highly airtight, durable and requires minimal maintenance. The internal reflective surface redirects sunlight to provide uniform, comfortable illumination throughout the day — without glare or harsh contrasts.
Dome
The outer part of the set is a transparent dome made of durable, weather-resistant material. Its shape has been optimised to capture sunlight at different times of the day. It is highly resistant to strong winds and UV radiation, ensuring its longevity and reliability. The rounded shape allows water to run off the surface quickly, while dirt does not tend to accumulate.

Light transmitting tube
The interior of the light tunnel consists of a flexible light transmitting tube with a length of 210 cm, which is characterised by a high light reflection coefficient. The flexible design facilitates light routing even in difficult installation conditions, allowing structural obstacles to be bypassed. The tube can be extended with additional SLM modules – up to a maximum recommended length of 400 cm for a diameter of 350 mm and up to 600 cm for a diameter of 550 mm.

Diffuser
Installed inside the room, the diffuser evenly distributes light throughout the space, eliminating spot reflections and shadows. Its matt, prismatic surface gives the light a soft, neutral character that blends well with various interior styles. The diffuser's design also allows for the installation of an additional light source – an optional SLO light kit, illuminating the room after dark.

External cladding
The external cladding of the light tunnel provides durable protection of the structure against water, wind and changing weather conditions. Made of corrosion‑resistant sheet metal, it features an integrated flashing that ensures a watertight connection with the roof surface without the need for additional mounting elements. The grey‑brown RAL 7022 finish blends harmoniously with modern roofing materials, giving the structure an aesthetically pleasing appearance.

Our products stand out for what truly matters. Discover the features that make them reliable and exceptional in everyday use.
Natural light where there are no windows

Light tunnels bring natural daylight into rooms without traditional windows, such as corridors, bathrooms, and dressing rooms. They make interiors brighter and more pleasant for everyday use.
Effective illumination

Applying specially designed light transmitting tubes allowed light tunnels to transmit daylight even several metres into the room. With this solution, high quality lighting can be maintained even in more complex roof structures.
Universal installation

Light tunnels are suitable for installation on various types of roofing, both flat and pitched. Their robust construction and carefully crafted details ensure reliable operation and aesthetic appeal for years to come.

Logistics information