Emily from SWISCO responded:
July 25, 2023
Thanks for reaching out to us! Based on what you show in your photos, it looks like you have the Series 351 or Series 390 channel balance. The important difference between these two similar-looking parts is the depth of the bottom shoe. You'll have to measure as shown below to determine the best match. As for the stamp, can you show us a photo of that? We'd also like you to write out the length of the metal channel but make sure to not include the plastic fittings in this measurement! Comparison of the S351 and S390 balance shoes.
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The bottom shoe measurement is 1 1/8"
The channel measurement is 27"
I have attached the picture of the stamp
Thanks for your help! When we figure out which ones to order, how do I go about placing that order? I need one for each side of the window.
Becky
Emily from SWISCO responded:
July 28, 2023
Thank you for the additional photos! If your bottom shoe measures 1-1/8" deep then I recommend the S390-27. The stamp doesn't match any of the listed strength options, I'm afraid. You'll have to weigh the window sash on a scale and refer to the chart under the product description on the S390-27 store page to determine the proper strength option for your replacements. All orders can be placed directly on our website at your convenience! |