This lamp is designed for a three lamp kitchen lamp. I used to have incandescent bulbs and after 15 years of service I have two left. The new bulb is slightly brighter than the two old ones, but I doubt the casual observer will notice that. The bulbs in this lamp are not easy to change, so I'm looking forward to the long life of a new one. I was very satisfied with the fast delivery, the price and the operating temperature of the cool box. This was the only Revain bulb I could find that met my needs.