However, the way for the better is very negative and burdensome.
1. The instructions for use provided with totally vague, ambiguous photos and thus quite simply unusable.
2. To assemble the lamp and for inserting the fluorescent reflector must be deducted. Here it can be seen that the reflector is very easy to damage or bend due to its weak design. This is particularly due to the too strong holding clamps used for this unstable reflector, which would be able to wear a reflector would be made of sturdy stainless steel. This clip complicate the extraction, especially the gleichmäße stripping, which is absolutely necessary in order to avoid damage to the far too weak built reflector. When inserting the reflector it does not look different. So I can only recommend this work if the lamp is not yet mounted, make at least three people. One person holds the lamp body, while the other two reflector draw forth evenly and disengage the claws. When the lamp is securely mounted, one can dispense with the person holding. Insertion should also with two people perform I assume that the reflector many relamping not survive without prejudice.
3. Any mounting material (plugs, screws and spacers) was missing.
4. When connecting the lamp, there are also problems when coming out of the ceiling supply cable is not directly related to the present coincides hole to carry the power line in the lamp body, and this is not very often the case. For me it was like that. If you installed the lamp, there is no distance to the ceiling is up to them. An indentation for a power cable is not available. I've built myself therefore spacers between the lamp and ceiling in the strength of the power cord a makeshift, but the work.
My advice, rather spend a little more money for a stable lamp.