Dbl hung window coil spring assembly replacement

A landlord from Nu Joyz says:
September 30, 2023
Hi always relying on Swisco as have several small unit properties and need help identifying replacement parts. See attached photo of coil spring unfoiled. The stamped numbers say 6.5 35" and don't see Swisco replacement product. Don't know if it's a Titen as noted in your web page
Think best to replace both the busted coil assembly and the same window operational assembly. Await your guidance and advice...thx~
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Emily from SWISCO responded:
October 2, 2023

Hello there!

Thanks for reaching out to us. Take a look at the 15-191 pivot shoe. I also recommend the S160-6 6.5-pound coil spring since yours is marked with the number 6.5. Let me know if you have any other questions and I'd be happy to help! 
Heavy Duty Pivot Shoe, 1/2" Thick
Heavy Duty Pivot Shoe, 1/2" Thick
15-191
$2.57
1/2" Coil Single Support
1/2" Coil Single Support
15-150S
$1.10
6.5 lbs Series 160 Coil Balance
6.5 lbs Series 160 Coil Balance
S160-06
$4.85
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