[header] How to frame a doorway [title] Choose a door. [step] Since doors come in so many different dimensions, you'll first have to decide the type of door you want to install. Most doors are going to be 30 " or 32 " wide and 80 " tall; however, this is far from universal. 
Choosing a door will allow you to make all of the proper measurements for the doorway. [substeps] If you haven't decided on an exact style of door, at least decide on an exact size, so you can get started on the doorway.