CK and DB Agreed.
If the fan dipole is not built for 160/80/40 meters
Perhaps a 40/20/10 built out of 28g wire may be less than 11 lbs.
I know for a fact my 160/80/40 meter fan dipole built using 10g wire and pvc spreaders weighs a lot more than 11 lbs.
Mine was made of regular 14 gauge stranded wire and it was a lot less that 10 pounds. Besides we are we not talking about talking 10/11/12/15m anyway and nothing lower? Almost nobody uses an Imax 200 on 20m and nobody at all on 40/80/160m. If we are bestowing the virtues of the Imax on 10/11/12/15m lets compare it to an antenna for just those bands.