constant force balance flat coil spring broken

A home owner from Westfield, New Jersey says:
i need 2 assemblies
pivot shoe and spring, spool, cover

spring has v shape tapered end with hole--see 1st pic

window markings:
37 3/8 x 31 3/4
warranty info 118-546517

manufactured 4/28/09
Thumbnail of the uploaded file named window pivot shoe.jpg
Thumbnail of the uploaded file named window spring pic 1.jpg
Thumbnail of the uploaded file named window spring  pic 2.jpg
Thumbnail of the uploaded file named window spring pic 3.jpg
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Bob from SWISCO responded:

See if our 15-177 Pivot Shoe matches up. This uses our Series 152 Coil Balances. Let me know if you have further questions. 

A home owner from Westfield, New Jersey says:
YES THAT LOOKS LIKE IT. I NEED TO BUY 2 SHOES AND 2 FLAT SPRINGS AS SHOWN IN MY PICTURES.
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Bob from SWISCO responded:

Great. All orders can be placed directly through the online store. Note that for the Series 152 Coil Balances you'll need to determine what spring weights you need. Look for stamps on the springs themselves that indicate this. If there are none, or you are uncertain, give me the exact weight of the window sash, and I can work it out for you. 

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