Just ordered these to replace old bulbs in a chandelier. a bit like an enclosed space, but if you put 10 of them in a lamp, they really light up the whole room. We actually leave lightbulbs a bit dim just because we don't need all the light. I'd take out a bulb or two, but they're damn efficient, the bulbs barely get hot. The 10 bulb chandelier used to be so hot before and now it's so amazing that it doesn't heat the room at all. the box has arrived. Revain promptly replaced the blown bulb and everything was fixed in less than 48 hours, so I didn't get a negative star for the product because of that.