Mounting holes are 2" apart. Width of operator is 1-9/16". Height of operator is 2-7/16". 1/2" extension on handle. Notch at bottom is 7/16" high.
Both left and right hand models available. Please check carefully because a "left" model on your trailer may be mounted on the right side.
This window operator is used on some 1964 Airstreams that have Hehr 2800 series windows (this will be etched on the outside of the backframe below the sill).