How to tell if your tank can be drilled?

[sphelps]

Originally Posted by serratus

It's a 3 footer. I didn't know there were standard 4 feet 50gal tanks. I thought the typical 4 feet dimensions makes up 55gal.

You're good it's not tempered. I figured it would be three foot because you're right the 4 foot is 55 but sometimes they are still refered to as 50's.