I have chosen especially for this lamps due to their low installation depth. Good and heavy gauge. The radiators are so assembled that only the already walking out of the housing (IP66!) And sealed cable ends well protected against moisture to the supply line in accordance with any, are to be connected. All simple and straightforward. As the LEDs emit very bright, I glued a difuse film under the glass. Since the LEDs develop no heat, this is quite possible, and you can influence the light accordingly.
How do I now after a short time had a low luminosity loss of a radiator (which can pass through it from time to time), this was completely uncomplicated and even with DHL return form (so I did not even return postage) exchanged quickly and easily! Perfect! Product and supplier are recommended.