35DS 37

A home owner from Fort Lauderdale, FL says:
Hi, I need to replace block & tackle mechanisms for 6-8 windows. The block and tackle metal frame is 36" long, and adding the plastic tips brings them to 37" in total length. I prefer to purchase them with the plastic tips already installed, if your company can do that.
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Casey from SWISCO responded:

Hello,

With this combination of attachments, you could have either the S380-36 or S385-36 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. 

Your stamp code indicates that your window sash weighs 37 pounds. If so, you would need 3560 strength options for your replacement balances. Thank you and let us know if you have any other questions or concerns.

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

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