#5,704, 165 coil sash replacement

A contractor from San Antonio, TX says:
April 11, 2018
two coils attached on same side. same attachment point.
there is a '5' punched into the coil
plastic part has Pat #5,704,165 and 530 markings
Customer disassembled and brought these parts to me. I have not seen the sash. The house was built in 2012

I will want a right and left
Thumbnail of the uploaded file named coil sash78255.jpg
A contractor from San Antonio, TX says:
April 11, 2018
Outer coil is stamped 5, inner coil is stamped 6
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Paul from SWISCO responded:
April 16, 2018

I'm afraid I've never come across this type of balance system. We won't be able to provide this exact setup, but see our S140-11 to start out. This has a 1-1/4" wide by 9/16" pivot shoe and also includes the springs and covers as one set. It would be Series 140-11. Two of these can support sashes weighing 21 through 22.99 pounds. See what you think.

The only issue other than size is that you will need a new pivot bar to replace their old one. See either our 26-405 or 26-398. The best match will depend on the screw hole spacing. Look over our measurements and see what you think.
11 lb Series 140 Quick-Tilt, Dual
11 lb Series 140 Quick-Tilt, Dual
S140-11
$11.45
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