Hi
This is a balance for a bathroom window 35"x35"
It has the numbers 1590 14 BSI
the metal part length is 16"the width is more than 1/2 inch (1.5 cm)Thank you
1590 balance for a bathroom window
Quick Learner from Glendora CA
Jan 29, 2026 12:37 pm
1 user uploaded image
2 Replies
Jasmine from SWISCO
Jan 29, 2026 3:56 pm
Thanks for posting! You'll need either the S380-16 or the S385-16 to replace your balances. The top on them is slightly different but that should not effect the repair. You'll need to measure the depth of the bottom shoe to determine the correct series.
The stamp does not cross-reference with those on our balances, so you're going to need to obtain the exact weight of the window sash to determine the correct option. There is a chart below the product description that lists the range each balance stamp will support.
Comparison of the S378, S380 and S385 balance shoes.
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