I have to keep flipping the light switch until it finally turns on. It may just be the tube bulb is shot, but at 40 yrs old, I think it's time to replace the fixture.

I am not sure what to replace it with. It is a 36" T12, 30 watt, medium Bi-Pin base single tube bulb.

It is over the vanity/sink in the bathroom, I don't know if it is considered a drop down ceiling or what. It is attached to the ceiling with plastic panels that sit on the bottom of the opening.

I have been looking at LED fixtures but have no idea which one would be best.

Appreciate any info.

 

I'm not visualizing what you have there. Can you post a picture for us.
How-to-insert-pictures.

 

Go with something LED, like this.

https://www.homedepot.ca/product/ill...ar-/1001025110

 

Picture of the fixture....

 

It looks like you have a troffer type setup.

It's hard to see in the picture but is the single tube fixture all the way up at the ceiling and there are plastic lenses down lower that cover the opening ?

If yes.... basically any light fixture that's 36" could replace the old fixture. Joed's link shows one and there are more at the bottom of that page.

 

Sorry for the quality of the picture, and thank you for posting it. Also, thank you for telling me what kind of opening it is. Is the 12-watt 1200 lumens on the fixture joed suggested equivalent to the 30-watt 2250 lumens on this old one?

 

The fixture I posted was just an example. It is 1/2 light output of the one you have now, 1200 lumen vs 2250 lumen.

 

Thank you both for your input, I appreciate it.