The universal fume hood is available in 24", 30", 36", and 48" widths which can cover all space limitations in the laboratory. The fully assembled model comes with a vapor-proof light switch and a 3-wire cord. There is also an option that includes an exhaust blower and another that adds an explosion-proof light. These need some additional assembly by the user. The explosion-proof light model is UL approved Class 1, Group D, Class II, Group E,F, and G.