Maximize active window in terminator

I am on xenial and using terminator 0.98.

When I do ctrl + shift + i, terminator opens up a new window.

Sometimes its convenient to maximize the window that was opened. Is there a keyboard shortcut to do that?

I have tried ctrl + shift + x and nothing happens.

Pardon me if I am too naive here.

To toggle the current of multiple terminals within Terminator between maximized and restored state, use Ctrl + Shift + x.

To use the default window manager keybinding to maximize your Terminator window, see Forivin's answer on this question.

Press Ctrl + Win + Up

On my standard 16.04 this shortcut allows me to maximize the active window.
There is also:

Ctrl + Win + Down to restore/minimize windows.

Ctrl + Win + Left or Right to dock a window to the left/right half of the screen.