Window hardware replacement

A landlord from Prunedale,ca says:
Attention Chris
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A landlord from Prunedale,ca says:
The window name was simonton purchased 1-1-2018
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Dave Sr. from SWISCO responded:

Hello there!

I'm afraid we don't sell the black track slider in your photos. We also don't sell your exact operator and I'm not sure if it's still available. We have the 39-438B and 39-439B operators which look similar but I'm not sure if they'll fit in your existing track. 

You might need to use the 39-253LB and 39-253RB, which uses the 39-529 track slider sold separately, along with the 39-546 and 39-545 brackets. Again, I'm not sure that the 39-529 will fit your existing track. You might need to install the 39-528 track which is a face-mounted track. It goes on the lower face of the window sash frame. I can't make any guarantees but take a look at the specifications for these parts and see what you think. 

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