Military housing balances

A contractor from USA says:
I work on military housing throughout the country. I'm having trouble replacing these coil balances.
The springs are stamped with 3,4,5 or 6.
Any ideas?
User submitted a photo of a window balance.
Profile picture of Casey
Casey from SWISCO responded:
Thank you for your patience in this matter! This one took some tracking down, but I think we finally found a winner. We will be adding a new part to our catalog that we believe can replace this. Please give us a little time to have it made up, and I'll let you know as soon as it's available!
Profile picture of Tom
Tom from SWISCO responded:
Alright, please see our new Series 145 coil spring, in addition to our 15-102 and 15-103! I think you'll find this hardware matches quite well. We are still working on the sash guides and hope to have them available soon!
15-102 : Double Side Load Carrier
Double Side Load Carrier
15-102
$2.53
VIEW >
15-103 : Quad Side Load Carrier
Quad Side Load Carrier
15-103
$2.63
VIEW >
S145-3 : 3 lb Series 145 Balance Spring
3 lb Series 145 Balance Spring
S145-3
$3.20
VIEW >
S145-4 : 4 lb Series 145 Balance Spring
4 lb Series 145 Balance Spring
S145-4
$3.35
VIEW >
S145-5 : 5 lb Series 145 Balance Spring
5 lb Series 145 Balance Spring
S145-5
$3.53
VIEW >
S145-6 : 6 lb Series 145 Balance Spring
6 lb Series 145 Balance Spring
S145-6
$3.70
VIEW >
15-222 : Sash Guide Base
Sash Guide Base
15-222
$1.44
VIEW >
15-223 : Sash Guide Cover
Sash Guide Cover
15-223
$1.22
VIEW >
How to Replace a Triple Coil Balance System
How to Replace a Triple Coil Balance System
VIDEO
WATCH >
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