What is the difference between PHOS projectors and graphic projectors (GL series)?

What is the difference between PHOS projectors and graphic projectors (GL series)?

The PHOS family is characterized by a compact, closed design. The projectors can be easily integrated into rooms. Graphic projectors from the GL series are larger and offer the possibility of using accessories for moving light effects, e.g. a projection clock or an automatic gobo changer. The most powerful device is the GL 1200, with a 1200 Watt metal halide lamp, for indoor or outdoor use.