Give me your thoughts on what the buzzing fluorescent lights in the backrooms contain. I am guessing F40CW Mainlighters on Advance Mark III ballasts. They my also be F34LW. Who knows.
The manila room has F40WW

Don’t know, but you have to hand it to the entity, flawlessly maintaining six hundred million square miles of 600x600 mods without a single tube being out! 
Wonder where he keeps his spares?

What about the blacked out areas of the backrooms? The fixtures gradually become darker the further you go in. Guess the entity is too scared to put lights there.
Also, do the backroom use 4x 18w cool white tubes or 4x 36w cool white tubes? Since the lore says about the annoying buzzing of the fluorescents, it is magnetic switchstart system.

Good point  , I’ve seen both 600x600 and 600x1200 mods in there! , also the light on the yellow walls looks dull as if the tubes were halo 35s?
A lot of newer Backrooms content seems to be circular LED down lights too from what I’ve seen? 

I just found this video relating to backrooms lore.
https://m.youtube.com/watch?v=DSWUEmJDglw
In the end (after 7:06), they show the fixture, ballast and tubes.
4x Sylvania lifeline F40SW no date code.
Universal ballast type A.