Window crank gear box

Hello,

We may be able to help, but we would need to see your operator fully removed from the window so that the arms that attach to the window linkage are fully visible. We'll also need to see a clear photo of the bottom mounting holes to narrow down your options. Thank you! 

Unforutnately, I can't be sure of what you have with the operator arms still attached to the linkage, but the 39-058 would be a good place to start. Take a look and compare the specifications below to your assembly. Note that the diameter of the hole at the end of the link arm is an important factor, in addition to the installation hole spacing. If it's a match, we also offer the 39-057 opposite-handed version if needed. 

Dimensions for 39-058

Alternate view of 39-058 Stanley Operator