How To Hang a Door

The Nuts n Bolts of hanging a door
GOOD ONE, Instructables... <br> <br>This video has been removed, but the topics still up !! <br> <br>Growing a bit slack there in your dotage !
What if you don't have an existing door to use as a template?<br><br>In my old house someone removed all the doors. No idea what they did with them. But I'd like to add 5 interior doors. They are odd sizes as well.
&nbsp;It should be called: Hanging a door, made easy!