Height of roofbars above roof

[NZCol]

Can anyone with Thule or VW bars give me an exact height above the roof line ? I'm building a new garage and just massaging the height - don't have bards but likely will, van is lowered - 40mm as well.

 

[Martin]

Genuine VW ones are 16cm in height, I think the Thule ones are bit lower than that

 

[NZCol]

Great thanks