The measurement of the outer screws on the base plate - center to center is 4-3/8". The measurement of L30841 bracket from where it's attached to the operator to the joint of the other bracket is 4" - center to center. The measurement of the bracket with the plastic wheel on it that says Entry Guard Truth on it from where its attached to the operator to the center of the wheel is 9".
While working on this window I realized the lock is broken too. The measurement for the screws center to center is 2-3/8". Not sure if you carry the locks too.Please let me know if that's enough to go on, or if there's something else I can describe or measure for you.
Thanks,
Mark