Very disappointing. Something is wrong with the specifications or the spring tension. After a day they start hanging/detaching from the ceiling. All bulbs are spaced about 1/2 inch apart. I will have to replace them. I cut the wires on some of them so I can't get them back, but I can't look at them. 18ft ceilings so replacing them is a serious job. I've used retrofit kits like this in my house before with no problems, so it's not uncommon at my house. Pay more for something better.