Double Coil window balance

A quick learner from South Carolina, USA says:
Marking on one of two springs says 5.5#, 33". I need 6 of these to repair 3 windows. Including posts. Post is 3 inches long with hole at 2 inches. Thanks for helping me be sure what I need to order
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Emily from SWISCO responded:

Hello there!

Your pivot shoe looks like a good match for our 15-111 which is designed to use the Series 160 coil springs. Since your springs are stamped "5.5#", see the S160-5 5.5 pound coil spring. As for the coil supports, see our 15-148 bumper and 15-150D double or 15-150S single support depending on how many springs you have per side. Finally, for the pivot bar, check out our 26-040 and compare our dimensions with yours to confirm this matches up to your old one. 

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