casement window w/Roto operator

A handy person from boston area says:
May 18, 2016
piece I am am seeking is the plastic/nylon part which sits on the bottom corner of the window and pivots as the window opens and closes and which slides along the track in the frame. it is 'L' shaped with the short side in the track of the frame. it may be part 39-541. how can I tell? even after repairing and replacing hundreds of double hungs, I still don't have much to do with casements. is this part on the right track, so to speak?
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Tom from SWISCO responded:
May 18, 2016
There are a lot of parts that match your description. Could you show me a picture of it? That would be a huge help.
A handy person from boston area says:
May 18, 2016
will see what I can do the get the part off the window and get a photo of it.
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Tom from SWISCO responded:
May 19, 2016
Thank you! Once we can see that we will do our best to find the best replacement option for you. We have a lot of casement window parts so we should be able to get you squared away.
Roto Casement Track Slider
Roto Casement Track Slider
39-541
$4.29
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