I believe the 1414 was sized specifically to slide into the into the condenser slot of the Durst 10x10 Condenser head. That is why the cord, pilot light and heater switch all are on the same side. Although my Aristo 1414 came mounted just to the top of my negative carrier stage with no other 'head' on the enlarger.
I sold the 1414 to make way for a CLS2000, and the new owner of the Aristo 1414 had a new V54 tube made for $500.
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