In tmux can I resize a pane to an absolute value

Question

Is it possible to tell tmux to \"resize a pane to 5 lines high\"?

I know I can do resize-pane -U 3 to move the dividing line, but sometimes when logging in

Answer 1

On a Mac, it'd have to be + H/J/K/L on Tmux 1.8+. The arrow keys didn't work for me.