10x12 holder dimensions

Ha fellows, can someone please, point me to information regarding the 10x12 holder dimensions? I can take the T-distance and the rib-lock distance from Alan Brubaker's site, but I can't find the overall width and the film loading flap width.

Thank you very much in advance!

Andy

Hey Andrey
Here's the holder spec page from Keith Canhams site. Hope this helps.
http://www.canhamcameras.com/Film%20Holder%20Specs.html

I was thinking about this a while ago. How about spec dimension of 5x12, 7x17, 8x20 filmholders?

I'm using 1012 Japanese made wooden camera to make wet plates although it's a British brand.
It's not standard graflex size.
I would measure the holder if you need the size.

Thank you for your replies! Canham's site information will do.
Thank you!
A.