As Optibeam no longer manufactures wire beams, I opted for the
LZAW 10-5.
The beam for our house needed to be of a certain size but still
not too bulky and massive mechanically. As our house has a
spacious floor plan, there is a first floor, attic and attic.
This means that the beam is closer to the eye of the beholder
than in a house with one or two more floors.