[gmx-users] Box with the same size

[Irina Tikhonova]

Dear Gromacs-es!
I have a system POPC-protein-water in pdb (system size 8.7 8.4 12.95) which 
I built manually. I would like to built a new box for this system with the 
same size approximately which I can use for simulation.
I tryed to do it using editconf

editconf -bt cubic -box 9 9 13  -f complex.gro -o complexB.gro -c

when I use the obtained file for simulation I found out that my complex is 
cut in  pieces in the box.
If i don't specify the box size it creates the box 16 16 16 which is too 
big for my system.
How I can specify box size of my system correctly?

Thank you in advance,
Irina