SOLARSPOT® D-900 is a tubular daylight system, produced by Solarspot International S.r.l., conceived and designed for larger production areas or for buildings with very high ceilings, such as those of production, retail or storage areas. Each Solarspot® D-900 system can illuminate a surface of approximately 95mq, with duct lengths that can reach up to 30m.

With a diameter of 900mm, the D-900 requires a minimum ceiling height of approximately 8mt and may require structural reinforcement depending on the type of roofing.

Solarspot® D-900 is usually sold in monotube kits of 60cm in length, but based on customer needs, it is possible to supply it in a double-tube version to which straight extension tubes can be added to cover longer lengths. For this diameter is available only a round finishing with "lamp" diffuser type. 

To increase the security conditions of the room where the Solarspot® is installed, it is possible to request the installation, under the dome, of an anti-intrusion system consisting of an adequate number of stainless steel bars, positioned radially and pre-assembled on the top tube.