 Since the stage set had no windows, writer Jennifer Celotta's office was dressed to look like Michael Scott's when the script called for him or someone else to look out the window into the parking lot.In the second and subsequent seasons, the office interiors and exteriors are at a different location in Van Nuys.Some viewers have presumed that the Pennsylvania Paper & Supply Company's tower, a downtown Scranton landmark which appears in video footage shot by cast member John Krasinski for the show's opening credits, is the Dunder Mifflin office.