72 Brave awning length

[fierce beagle]

I have a 72' Brave and am going to make a deck for it this week.  The RV is 6 hrs away and I would like to know the awning length in stock form.  It has the rail for to receive the awning, I will be purchasing the awning next spring. 
What is the max length of the stock awning?
thanks

[Oz]

Is it a D18? D20? D22? D24?

Can't begin to help without that info.

Is there someone where the rig is who you can call and ask to measure it?

[fierce beagle]

Circling back around to this, but this time I am wanting to order an awning that stretches from front to back using the awning attachment rail that is already there.  I have the D20 with the bed/table layout in the far back.
Otherwise I'm thinking of ending the awning at the front of the side window over the bed bench. 
attached is a pic of my type of window layout.
not my actual winnebago

[Oz]

Whatever you prefer.