Milgard window balancers-need 2

Home Owner from Gilbert AZ
Not sure which item to order. These are 9/16"(1/2"), one is broken but will order both new. Overall length is 28", non-tilt window. Pic shows numbers on the back of existing balancer but they make no sense to me. I'm a former home builder and can replace them myself once I get the new parts. Please advise, thanks much! Steve Hill
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Tom
Tom from SWISCO
SWISCO
Expert

Thanks for your photos. Based on what I see here, you have either our Series 380 or Series 385, depending on the depth of the bottom shoe. That's the only difference between them. I recommend measuring your shoe and referring to our dimensions to confirm the best match.

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