what is door blanks?
Answers:
"Door blanks" are usually doors that have not been routed for hinges, drilled for locksets, or trimmed to size. If you look at doors in a store like Lowe's, you will see door blanks in many styles and sizes. You will also see the same styles that have been hinged and drilled for locksets and are "prehung" in their frames ... thus the name "prehung door units".
I hope this answers your question.
Other answers:
Are you talking about a new door with no hardware or hinge pockets?
Are you talking about a new door with no hardware or hinge pockets?
i have no idea.