coil ballast replacement

A quick learner says:
I need 4, 9 lb and 1/2 thick coil ballast. I have shoes
Thumbnail of the uploaded file named SANY0031.JPG
Thumbnail of the uploaded file named SANY0032.JPG
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Casey from SWISCO responded:

Hello,

The pivot shoe shown in your photos resembles the 15-177 shown below. This shoe is used with the Series 152 coil springs and the related items listed on our product pages. The S152-9 is rated to support 9 pounds of sash weight. Take a look at the related items shown on our product pages and the related videos to help you through the repair process. Thank you! 

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