Yes, this is a custom fixed window from Sun Windows and Doors. Most any aluminum clad window can be made in the same size. You may also try Milgard windows, they make all custom sizes / area affordable / and are low profile like this window.

Hello. Are the specs of this window 4x2? Thank you!

Also, what is the interior finish? We are doing aluminum clad windows, but my husband says we will paint the interior what we want. That doesn’t sound right to me in a shower. Can you specify interior finish. Thank you!

Hello, no this window is much bigger than 4x2 -- it's been a while, but I believe it's in the 30" x 72" range. Also, It is a pre-finished alum window, I do not recommend painting an alum unit after install.