Production/Inspection v. Duces Tecum

Below is a table showing the differences between production or inspection orders and subpoenas duces tecum.

Production or Inspection of
Documents or Things
Subpoena Duces Tecum
Essentially a mode of discovery

Means of compelling production of evidence
 Subject of the order:
The Rules are limited to the parties to the action.

May be directed to a non-party
May be asked before or during trial

May be asked only during trial
 Resolution of the motion:
The order under this Rule is issued only upon motion with notice to the adverse party.

May be issued upon an ex parte application.