Adding a window to the back door of a 3.5t horsebox

[Sugar Plum]

As per the heading, has anyone done this and if so, what did it cost? Are there any safety issues (I assume not as there are some that have back door windows)

 

[Lady Jane]

You will need to get a quote as I think it will depend on the construction of your back door how easy or otherwise it is to do? You can see window prices on-line - size/bonded/bars atc all make a difference