Hi, the total height is about 4 feet long from the ceiling to the bottom, but we could not extend the light. If your quantity is large, then we could help to extend the cord to what you expected, thanks.

We need a few lights and the ceiling is 15 feet so would need 15 feet of cord. If I purchased the lights would I be able to swap out the cord?

Hi, you could not swap out the cord, could you let me know how many piece would you like to order, thanks.

Hello. We just need 4, and we would need 10 ft of cord.

Sorry for the later reply, but we don't have with 10 ft long cord, thanks.