Window channel

A quick learner from Ca says:
I am looking for 6 ea of the 3230 window channels for my vinyl windows. I would like them with the ends on them. I have attached a photo of the parts.
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Casey from SWISCO responded:

Hello, thanks for posting! It looks like you could have either our S351-33 or S390-33 with the 3230 stamp option. The difference between the Series 351 and the Series 390 lies in the depth of the shoe. Take a look at the picture below for more detail. Once you have determined this dimension you should be able to select the appropriate balance. 

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.
A quick learner from Ca says:
It appears that both options are out of stock how long does it normally take you guys to get either of these in.
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Casey from SWISCO responded:

I apologize for this inconvenience. The balances that you are inquiring about have been ordered but, due to the state of affairs, things have been moving a bit slower than we'd normally expect and our information is limited. You can sign up for our auto-notification service on the product page and you will receive an e-mail notification as soon as we have the part back in stock. 

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