overflow wanted

[Realshow]

I am converting a floral venezia from freshwater to sw.
I need a black plexi or acrylic overflow box.
I had one but gave it away. It is for internal needs 3 sides approx 24 inches high to fasten to the back of the tank and cover the pre drilled stand pipes.
I know they come in new tanks but haven't been able to find one

[Aquattro]

Typically you need to go to an acrylic shop and have one made. I've seen them for sale once in a while new, but not that kind of size.

[Proteus]

Check here

http://www.glass-holes.com/Complete-Overflow-Kits_c3.htm