Window parts

Handy Person from Chino Valley, AZ

Good morning, I need 2 window sash spring assemblies. The metal portion measures 29". I am not sure how to tell whether the plastic fittings are winged or not. The markings on the old unit are 28-4 HN Caldwell. I have attached pictures.

Please send me an estimate as soon as you can.

Thank you,

Tony

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2 Replies
Casey
Casey from SWISCO
SWISCO
Expert

Hello,

It looks like you have either our S351-29, with a 15-002 bottom attachment, or S390-29, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a 2840 spring strength option for your replacement balances. Thank you!


Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.
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