replacement parts for vinyl double hung windows

A contractor from Illinois says:
April 4, 2024
I have six vinyl double hung windows with various pieces of the sash balance system in disrepair. I would like to purchase 8 sets (coil spring and accessories, pivot bar, brake shoe) of better quality since the homeowner appears to be rough on the existing ones. The pivot bar is 2 1/4" long, has a round engagement end with an embossed "I". It mounts from beneath the sash on the bottom side of the meeting rail with two screws. The 1/2" wide coil springs have a "7E" mark and terminates in a curve that fits into the brake shoe. The brake shoe measures 1 1/4" w x 1 1/2" h x 9/16" deep.

Please advise me what to purchase. Thank you very much.
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Jasmine from SWISCO responded:
April 5, 2024

Hey there,

Thanks for writing in! We do not carry an exact replacement for your existing coil balance shoe, but I believe our 15-177 Coil Balance Shoe should work well as a suitable replacement. To confirm, carefully review and compare the dimensions and design below.

Alternate image for 15-177
Alternate image for 15-177

This shoe is compatible with the 1/2" Thick Series 152 Coil Balance secured to the shoe using the 33-072 Philips Screw. Since yours is stamped with a 7E, you'll need the S152-7. 

The compatible cover assembly used with this coil balance assembly are the 15-143 Coil Bushing, 15-144 Coil Bushing Cap, and the 15-145 Coil Barrel Support; all of which are sold separately.

You pivot bar looks pretty similar in design to our 26-466. Take a look over the dimensions to confirm that this is the replacement you need.

Dimensions for 26-466
Dimensions for 26-466

Dimensions and closer look at 26-466
Dimensions and closer look at 26-466
Coil Balance Shoe, Slate Blue
Coil Balance Shoe, Slate Blue
15-177
$3.47
Pivot Bar, 2-1/4"
Pivot Bar, 2-1/4"
26-466
$1.92
Coil Bushing
Coil Bushing
15-143
$0.97
Coil Bushing Cap
Coil Bushing Cap
15-144
$0.70
Coil Support Barrel
Coil Support Barrel
15-145
$0.49
#8 x 3/8" SS Pan Head Philips Screw
#8 x 3/8" SS Pan Head Philips Screw
33-072
$0.30
7 lb Series 152 Coil Balance
7 lb Series 152 Coil Balance
S152-7
$4.80
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