Old covers for fluorescent ceiling lights

[GoNative_TN]

So I have been looking for two replacement covers/lens/difussers for some VERY old lights in our basement. These are not wrap arounds. I can't seem to find the correct dimension, which is 15-7/8" x 47-3/4". I can only find 24" x 48" stuff. Do they still make them? Can someone tell me a source for them? I don't want to spend a bunch of money, I'd rather replace them if it would cost more than $10 each. Seemed like a simple search, just frustration!

Thanks!

 

[Charles (in GA)]

Flat material could be cut down to fit, but would be very close to the bulbs. Those are T12's I believe and you would do well to convert them to T8's and get more light. Just a new ballast and bulbs. This would also get a slight bit more space between the bulbs and a flat diffuser.

Charles