Have, but then decided to go after a long search, which referred to ceiling spotlights and LED lighting for this LED ceiling spotlights. If not much cavity is available for suspended ceiling (saving formwork), anywhere concern 230V cables to be connected together or in groups, these lamps are exactly right. With a 68mm-standard hole saw the openings saws - superior direction in which the radiator to be tilted (minor adjustment possible) - the side on which are the staples, rework a bit - and the lights can be clamped. Please note in advance that a little room for Mini transformers required in each case is needed. If some dust or sawdust should be trickled up into the lamps, easy to remove with a vacuum cleaner. Reinlicken the spotlight - possibly einjustieren - switch on - and beautiful light! The color temperature of the LEDs is about to light tendency towards "normal" light bulb, not too warm, rather neutral, very pleasant. Note: The lamps are not cheap, but prove their worth with me already for a year to the fullest satisfaction.