Window Springs

Handy Person from Daytona Beach FL
I don't see any markings on the springs. 
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Jasmine
Jasmine from SWISCO
SWISCO
Expert

Your window balance can be replaced with either the Series 380 with a 1" shoe or the Series 385 Channel Balance with a 1-3/32". To determine which series is the correct fit, you'll need to carefully review and compare the dimensions shown below.

Since your balances do not have any markings, you'll need to measure the length of the channel (not including the top and bottom attachments). You'll need this to select the correct length (in either of the links above), once you've confirmed the series you need.

You'll then need to obtain the exact sash weight to determine the stamp option needed to support your sash.

Comparison of the S378, S380 and S385 balance shoes.
Comparison of the S378, S380 and S385 balance shoes.

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