Merbau screen - how far can it span?

Hi all,

I have been reading this forum for a while now, this is my first post tho.

I have some spare Merbau left over from a previous project that I am thinking of using to make a screen ( in replace of a gate that has fallen down ). I no longer need a gate, as the side of the house it's on has lost it's access to the backyard with the creation a deck.

Now, The span between the fence and the my house is 2200. I have two very tall stumps left over from my deck that I was going to simply concrete into the ground ( one next the fence and the other next to the house) and screw on the decking horizontal.

Just wondering how far Merbau with span without needing a middle post?

Cheers


More...