Sentence help please

[SurgeHopper]

OK :

'The elevation of the building shall not exceed a maximum of 2.5° of slope height at the final product access'

Can anyone please refine this sentence?

The slope cannot be more than 2.5°.

I'm not loving the word height to indicate the slope - would incline be better?

'The elevation of the building shall be constructed to a maximum slope incline of 2.5 ° at the Final Product access point'

Better?

ARGH!