Good afternoon. I need to buy two of these to replace existing cranks that are not working. Thank you!I tried to match them on your site and bought two of your item # 39-315. The 2nd portion of the opening arm (part stamped 31850) is too long. Thanks in advance for your help!
I tried your customer service # and it says no one is currently available.
We unfortunately don't sell this exact operator. This model has not been made in a number of years now, but our 39-171 may be usable as an alternative.
The catch is that it may not work as-is. When it comes to replacing older parts like you have here, some adaptation may be required. Specifically the position of the connecting bracket on the sash may need to be adjusted, which would require drilling new holes.
For now, review the dimensions of the 39-171 and see how well they compare.
