I tried Home Depot, Batteries and Bulbs, Amazon, and just Googling it and I found nowhere that sells this kind of florescent bulb anymore:
4' Sylvania Super Saver Cool White F40CW/SS. Rapid Start 34W
I've found other Sylvania bulbs that are close, but none that are F40CW/SS.
Now I don't care about any of that Rapidstart Cool White stuff, I just want some light. Will another bulb of another wattage/style work?
Best Answer
Any common T12 bulb is what you need.
You surely have the most common 4' T12 bi-pin type. They are everywhere.
You have a wide choice of color temperature (4100k is standard fluorescent color, 5100k is more LED color, 2700K is incandescent color).
And CRI (color rendering index), nobody will sell you less than 80 anymore, but you can get as high as 98. Your old tubes were probably 50-60 CRI, the difference will blow you away.
Tube sizes
The 4-foot bi-pin type bulb is far-and-away the most common. They come in two primary types that you'll spot in an instant:
Base types
It's rare, but on occasion you will run into an oddball base type. The 8-foot fluorescent tubes use different styles of base, and some idiot made a 4‘ long version of that - complicating everything. Most of these critters are T12. Just for the record, here are the three base types that are possible:
Consider LED
You can now get "tubes" which are in fact a row of LED lights. They come in a variety of color temperatures and CRIs (not as good as you can buy in real fluorescent). Don't just throw a pair in the cart, they take some wiring.