I would like to replace 15 year old Fluorescent 4 foot strip light fixture (electric ballast, T8, two light, 32W), it looked like this. This is in a closet ceiling. I was a bit surprised that when I removed the fixture, there was no junction box in the ceiling. I understand that the ballast may eliminate the need for a junction box.
My question is: if I now install an LED 4 foot strip light fixture, that I believe has a "driver" and not a ballast, do I need to install a junction box before installing the LED strip light fixture?