[Beowulf] rear door heat exchangers

[Michael Di Domenico]

i'm looking for, but have not found yet, a rear door heat exchanger
with fans.  the door should be able to support up to 35kw using
chilled water.  has anyone seen such an animal?

most of the ones i've seen utilize a side car that sits beside the
rack.  unfortunately, i'm space limited and i need something that will
hang on the back of the rack.