I am trying to replace a pendant light in my bathroom. my question is this: the base of the current light is about 6 in. The light that i just bought has a base of 4 in. I just now realized that that probably won't work.

Do i need to get a diameter of 6 or greater for the new light or is the hole underneath not as big as the whole diameter?

This sounds like such a silly question, but i have to buy the light before i can have the electrician out.

thx