My 5 light bulbs are open bottomed and don't feel hot to the touch when installed but half of them have burned out in 10 months which is probably 1500 hours of use. The first one burned out after half a year, and when I installed the extra one I had, the old ones were noticeably darker and much bluer than the new ones. Update 10/29/21 One of them just made a loud bang and burned out. . He took an electronic dimmer with him. DO NOT BUY.
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