Sash Release Lever

A handy person from Germantown Hills, IL says:
My granddaughter recently purchased a house and we determined there were issues with some of the windows. They are double hung tilt windows. We were fortunate enough that there was some documentation left at the house that showed the purchase of the 25" series 600 spiral balance (S600-25) from your company. I have provided photos and dimensioned sketches of the sash release lever needed to repair the windows. I have added what I think are your part numbers. I am looking for confirmation that I have selected the correct parts. This is one of about 4 requests I will be submitting as I have multiple photos and you can only accept 5 at a time.
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Paul from SWISCO responded:

Our 26-243 thumb button lever does appear to match up to the part you are showing us. Reconfirm the measurements and you should be ok to go. 

Styles of Tilt Window Latches
Styles of Tilt Window Latches
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