The Sun Rack 900 is a 19" Rack. The main difference to other Sun Racks is
that it is only 900 mm deep.
There is a Sun rackmount-Kit for the V880. The E4500 is not supported with
the V880 in any Sun Rack, due to the fact that the E4500 ventilated from
left to right (or the opposite?) and not from front to back.