Best Practice Install Method for Andersen 100 Window

Here's an interesting video of the installation of an Andersen 100 window. Our association is installing some of these this year.

The video is provided to give an idea of the method of installation of this window. I'm not a carpenter and I'm neither approving or disapproving of the method shown in this video.

Comments, Corrections, Omissions, References

Note 1.  I don't own stock in Andersen or any other window manufacturer, nor to I have any interest in any window distributor, installer or roofing company.