Window Cranks

Thanks for posting. I am confident we can help, but we'll need a little more information to help. Can you manually open one of the windows and give us a clear, bird's eye view of the entire window operator? I'd like to see not just the crank handle and gear box, but the arm(s) that push and pull the window sash as well. Once we see the full design clearly, we should be able to narrow down what you need. Many thanks. 

Thanks! These look like a match for our 39-187 and 39-188. Look these two parts over and let me know what you think!

Dimensions for 39-187

Great! I'm glad that they're a match. 

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