Hello Thun2 Yes, installation in a concrete ceiling is no problem. The housing should have an opening with a diameter of 15cm. The size of the housing is not very important. The control unit and the connection box of the light are not very large and heavy. We think the illumination and the colours are great! A beautiful light. Greetings misch-76

This product is not specifically designed for use in a bathroom, as it is intended for general indoor use. However, it is important to check the exact specifications for moisture resistance and bathroom safety standards.

I don't know whether this is possible or not

Yes, the power supply unit is included. It is slightly higher than the spotlights themselves. Approx. 4 cm high, 10 cm long and 5 cm wide.

The light you are looking for seems to be the flat version, as it has a height of 2.80 cm and is made of plastic and metal. This flat design makes it possible to install it in rooms with low ceilings. However, if you are looking for the latest flat version, it could be the Philips Hue Slim Recessed Light, which is known for its shallow installation depth.