Window Operator that needs to be replaced

A home owner from Hillsboro, OR says:

Can you help me identify the replacement part number for this window operator. The 4th photo shows the dimensions in inches. I hope that is clear.

The 2nd photo shows the only identifying marks I could see: Interlock 12C-1S23

Please provide all part numbers related to this operator: operator, handles, spacers, etc.

Thank you very much,

Dennis 

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Casey from SWISCO responded:

Hello,

This looks like older versions of the ROTO 39-091 and 39-092 Short-Arm Operators, which use the 39-224 handle. Unfortunately, ROTO has discontinued many components that are needed for this operator to function, such as the link arm that connects it to the window sash. Sometimes these bracket arms can be found secondhand on a site like eBay, but I can't make any guarantees. I apologize for any inconvenience.

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