Looking for replacement T4 E11 75W halogen lamps for my bathroom light fixture so I tried these. My only concern was that the ones I had were 1050 lumens and these are "only" 750, My concern was baseless, these were a perfect replacement at about 1/3 the cost and are at least as bright. Also, the light is a tad "whiter",, i.e. less yellow that those I replaced. They worked so well I bought a second set for a similar fixture. Only question is longevity, but time will tell...