62 / | HD | REFRIGERATION |
440 | DF | COOLED ENCLOSURE {8} |
452 | DF | .~ With heat rejecting element enclosure or cooling feature {2} |
454 | .~.~ With ventilation means therefor {2} | |
455 | DF | .~.~.~> Forced circulation |
456 | DF | .~.~.~> Vertical flue venting bottom compartment |