Window balances

A contractor from Pennsylvania says:
March 25, 2024

I am thinking they are the 380 or 385 but not sure how to measure the difference. The balance measures 30" long. They are going in heavy single pane hurricane windows in FL.

Thank you for your help!

Adam

Thumbnail of the uploaded file named 29HP48-50 stamp
Thumbnail of the uploaded file named winged top fitting
Thumbnail of the uploaded file named winged top fitting
Thumbnail of the uploaded file named winged bottom shoe
Thumbnail of the uploaded file named winged bottom shoe
Profile picture of Emily
Emily from SWISCO responded:
March 26, 2024

Hello Adam!

Thank you for reaching out to us. This appears to be either the Series 380 or Series 385. The difference between the two is the depth of the bottom fitting as shown below. Your stamp doesn't match any of our stamp options though. Can you weigh your window sash on a scale and tell us the precise weight?

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.
30" Series 380 Channel Balance
30" Series 380 Channel Balance
S380-30
$11.30
30" Series 385 Channel Balance
30" Series 385 Channel Balance
S385-30
$11.30
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