Metal ventilation ducts specially adapted for use with magnetic resonance imaging (MRI) machines for diagnostic and medical purposes; metal quench vents being metal ventilation ducts and vent covers used for the ventilation of cryogens, specially adapted for use with magnetic resonance imaging (MRI) machines for diagnostic and medical purposes.

Metal ventilation ducts specially adapted for use with magnetic resonance imaging (MRI) machines for diagnostic and medical purposes; metal quench vents being metal ventilation ducts and vent covers used for the ventilation of cryogens, specially adapted for use with magnetic resonance imaging (MRI) machines for diagnostic and medical purposes.