This is more or less what the Lab Tech had to do (with my help) to get through the window.  Bearing in mind that he had to climb over a desk (and PC) to reach the window, and then over a 40 gallon drum full of chemicals to get out of the room.

Running through the lab involved opening the dividing door, travelling no more than 6 feet, past 2 fire extinguishers, and opening the door in to the warehouse.  Suffice to say, the window was pointless as an escape route.  Especially if the warehouse was on fire on that side.  Part 3 coming up eventually.