Nice, what's the max span you can do on that beam?
what Matt said - this is a center girder which is only stopping deflection of the floor above - there are no other loads, other than people walking
and the floor/ceiling system. There are tables on their website for all sorts of uses (ie, header above a garage door, ridge beam...)
I own the upstairs unit, there is no deflection.
The owner of the unit is a PE and spec'd the beam, which is 11-7/8x5-1/2 actual.