hartke 3500a speaker outputs

I'm planning to get an Hartke 3500a.

I noticed in the user's manual that this head has two 1/4 speaker
outputs, of 8 ohms each one, it seems (?).

If I plug a 4 ohm cabinet (350 watts) to one of them will I get the
full 350 watts of the head?

If not, how could I get those, and would it be prejudicial for the amp/cab?

I emailed Hartke but they didn't respond to me yet.

Thank you for replying!