What is the thinnest external overflow box?

[kris2for]

My Tank will be on the wall and need to drill for a over flow box. What is the thinnest external box so I dont have to pull tank off wall much?

From what i was searching these are the ones i found so far

Eshops Eclipse - Outside Box: 12"x3"x6"
Modularmarine - outside plumbing box- 11.875" x 3" x 6.25" tall

 

[Gablami]

I had modular marine customize my external box to fit the space for a frag tank. He did so at no added cost if I remember correctly. Used uniseals instead of bulkheads to save space.