Isotop fitting

[rutgerdenouden]

I am trying to install a brand new isotop, but I was wondering where this part is for. Where do I have to put this? I can not figure it out in the instruction manual or from this forum... Hope somebody can help?

 

[Dr-Snickers]

Think you’ll find your answer here:

'Is the Brandrup Iso-Top roof insulation worth having?'
https://vwcaliforniaclub.com/thread...oof-insulation-worth-having.22514/post-422520
#93