In this case, Manley combines a Soft Drink dispenser with their Cascade
kettle. Their description states that this popcorn popper/soft drink
dispenser is for the large school.

Image courtesy of Forum Member rbuchholz.

The above image shows the Model 70 Profit Twin in 1958 at The Hi-Line
Threatre in Rudyard, Montana. The following photos shows the
concession stand of the Hi-Line Theatre today. The Profit Twin,
original to the Theatre, still makes popcorn for the Hi-Line's customers.
But, the soda dispenser section has been removed.




Images of the Profit Twin in the Hi-Line Theatre are courtesy of the
Theatre.

Image courtesy of Forum Member rbuchholz.
Apparently, they also called it the Manley Coliseum:

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