Window operator

A quick learner from Indiana says:
November 1, 2017
I am a property manager in need of several parts for this type of window please get back with me so I can order parts or complete operating system for this type of window. The single straight arm is 11". It is face mounted like,39-141 but the screws go from the outside toward the inside of the house. Can you receomend a replacement.
User submitted photos of a window operator.
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Tom from SWISCO responded:
November 7, 2017
Sounds like you need a rear mount operator. See our 39-023, which has rear mount holes. Could this work for you?
Rear Mount Casement Operator, 11"
Rear Mount Casement Operator, 11"
39-023
$65.29
Single Arm Crank Operator, 11"
Single Arm Crank Operator, 11"
39-141
$48.92
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