These numbers should give you an idea how much Thinsulate you’ll need to get the job done:
Sprinter Van
144” = 50 linear feet
170” = 60 linear feet
170” Extended = 70 linear feet
Transit Van
130” = 40 linear feet
148” = 50 linear feet
148” Extended = 60 linear feet
ProMaster Van
136” = 40 linear feet
159” = 50 linear feet
159* Extended = 60 linear feet
*All size estimates assume sliding door and back door windows. No windows +10 ln.ft