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39-188 Sash Dyad Crank, 5"

I need two right and two left casement window operators. They are white. A picture is attached. I see two different model numbers on your site that could be the right one. How do we differentiate?

Hi, I am looking for a replacement Window Dyad crank operator with a 5" hole center and a 4.5" arm. I ordered SWISCO product 39-090 which was much too large to close. I am returning them now. But before I reorder I was hoping for some confirmation on these two questions. 1. will SWISCO p/n 39 ... (cont.)

I've identified the replacement parts I need, 39-187 & 39-188. The 39-188 has the option to choose a color while the 39-187 does not. Does this mean 39-187 only comes in white? Thank You, Raymond Sugel Sr

I have some photos for my broken window part, help me look for it and let me know the price, thanks there are words inside: PAT US 4505601 UK PAT 2135397 30614 30893 these might help

What is the difference between the sash crank and the dyad crank other than cost? (pt.39-090 vs. 39-188)