Top sash

A quick learner says:
Hello I am looking for a top sash for a series 350 channel balance. Could you please direct me to which ones I should buy? Thank you!
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Lauren from SWISCO responded:

Hello, thank you for posting,

We do not have this exact sash guide, but it is similar to the 18-172. Take a look and see how the dimensions compare to yours. The one thing that I can't account for is the offset of the screw hole in your guide. If the dimensions match up, you may still need to drill a new hole in the 18-172 to install it. 

Let us know what you think and if you have any additional questions. 

Detail of 18-172
Detail of 18-172

Side view of 18-172
Side view of 18-172

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