Multi RS Solar clearance / distance

Hi all, ordering 3 pcs. multi RS Solar for DESS and back-up power.

I am reading a lot of somewhat contradicting information, but what do you think? Should I really keep the 30 cm clearance between the units? It makes so little sense somehow and takes more space than I care to use.

What are your thoughts?

Thanks ahead !

Cheers, Michael

The clearance is 30cm above and below.Nothing is mentioned to the sidesmin the manual.

Make sure it cannot accumulate at the ceiling if it is (30cm) close there.

They draw air in on the bottom and blast it out the top. Keep 10cm in between though (from experience) otherwise the middle unit gets heat built up more than the other units. Unless ypu ha e another way to kove the heat away.