Technical model a door question

ok so I have another question for the experts. Do 30/31 doors have a inside molding to complete the channel for the windows? I was looking an A door and I didn't see but only the outside of the channel for the window. thanks for the help. Brian

 

There is a metal cap or moulding on the top of the door that you remove to take out and install the window . And there is a garnish moulding at the bottom edge on the inside where you would rest your arm if the window was open.