Getty casement operator

Home Owner from Tenants Harbor, ME
May 28, 2021 9:34 am
I have some old Getty casement operators that look like your #'s 3920 (R) and 3921 (L). The measurement from the slot on the gear screw to the end of the control arm is 9 1/4" to the end and 9" to the post (see photo), and the operator track measures the same as your #39-520 (13 1/2"). Can you confirm the part numbers? I need 2 Rights and 2 Lefts, complete with crank handle. Thanks!
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6 Replies

Home Owner from Tenants Harbor, ME
Jun 2, 2021 3:49 pm
If the dimensions are as in the photo I sent (9" from crank gear screw to flange post) I think it's a go. The only deal breaker would be if somehow the crank pivot point slides away from the jamb as the window opens (a newer feature for ease of cleaning), but I think you'd need a second control arm to accomplish that. They all go from 0 to 90 degress, right?
As long as purchases are returnable if they don't fit, I'll spend the extra $$ and buy sets to include all 3 pcs. (track, operator, handle) & use whatever is needed. Thanks!
As long as purchases are returnable if they don't fit, I'll spend the extra $$ and buy sets to include all 3 pcs. (track, operator, handle) & use whatever is needed. Thanks!

Dave Sr. from SWISCO
Jun 3, 2021 1:09 pm


What you are referring to is the new style wood and vinyl casement windows that "pull out " from the hinge for easy cleaning from the inside of the house. The suggested operators are the older style used mostly in the steel type casement windows and some of the wooden windows. These type of operators are made just to open outward with no pulling away from the hinge side.

Dave Sr. from SWISCO
Jun 4, 2021 9:39 am


Thank you very much for your order. Please let me know if you needed anything else.
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