Series 770 Channel balance with 33E stamp?

A contractor from royersford pa says:
I dont see a 33e on here is there something that is compatible in the 770 series?

here are my pics they are identical to the 770 series let me know
thanks,
Jim H.
A customer submitted photo of channel balance attachments.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting, and for the pictures! That is certainly a Series 770, however the 33E is not a standard option. It may have to be a custom order. Before we get started with that though, can I just confirm that the length of your metal channel is 33"?
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 help@swisco.com.