The good thing is, it only ups the total price by 21$, but better safe than sorry eh

And the drainpipes i wanted to use at first, is more than fine for spray n'pray. So my inlaw wont blow up.
The manufacture is Plasson in case it matters. So one last question so we can close this thread and hopefully open one in the showcase soon.
Here goes, I need a reducer from 110 > 75 mm but theres 2 kinds available. Pretty much the same price but which would be proffered?

The illustratings are not in proportion afaik.
I didn't want to multipost, but the other post would get very messy I thought.
/michael