Need window parts

A quick learner from 95135 says:
Hi there:

Not sure which part I need.

These are pictures - the most telling is the stamping '2130bd' - the 21 is likely 21" tall. The '30bd' looks like an 'option' but I don't see any 'options of '30' for 21 - only 20?

Could you please tell me which part I need?


Thumbnail of the uploaded file named window_slider2.jpeg
Thumbnail of the uploaded file named window_slider1.jpeg
Profile picture of Tom
Tom from SWISCO responded:

No, that 21 does not reflect the length. Choose S350-22 with a 2130 option like what is printed on your balance.

Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at 856-317-6263 or at