chevy venture

Ok i have multiple chevy venture vans i am quoteing for a local law agency. i have to match front windows to rears and the forbidden windshields!!! i was wondering if anybody knows what width roll for the entire windshield will i need i am trying to quote these vans sight unseen right now and im thinkin thats a big a## windshield ... i need to goto walmart parking lot and look around i think and bring my tape measure!! lol

I would imagine the front doors are over 20"s but the windshield shouldnt be over a 40" roll

It seems to me that this mini van uses exactly 40" to the front and 24" to the sides