Abstract: A reusable and portable temporary door/frame assembly primarily used in abatement, remediation, demolition, and remodeling applications with a containment enclosure or barrier to allow quick and easy ingress/egress, or restrict movement, to/from a limited access area. The assembly comprises lightweight materials, such as but not limited to plastic or aluminum, and two non-spring-loaded telescopic poles that extend a top bar/piece upwardly for attachment to an overhead door frame, header, or ceiling. The top of the frame is also configured to accept two upwardly extendable spring-loaded/biased poles allowing a containment enclosure or barrier to be built to ceiling heights beyond the reach of the integral telescopic poles. Since the assembly is portable, it can be installed to open inwardly, outwardly, and is reversible, depending on convenience or need. The door is lockable. The door panel's frame includes a seal at the top/bottom to reduce air transmission to/from the limited access area.