Bally Williams Coin Doors are they standard?

[Colywobbles]

Just wondering as title suggests as I was asked to make a Coindoor plate for FT
I had a couple of old spare doors which it fits and they are the same size as Stern/JJP/Spooky.
Unfortunately the wife has COVID ATM so I don’t want to poke around Billy’s collection of ball/Will to check so can anyone help.

My standard size is 146 x 42 and fits the Center recess perfectly.
Thanks Col

 

[robotgreg]

I just measured a Stern and B/W coin door and both seemed to be about the same at 15cm x 4.5cm but only did it roughly. Think you should be fine with using your usual standard.