Window balance

A contractor from Columbia Maryland says:
August 15, 2017
28" long with marking of b 2830
User submitted photos of a window balance.
A contractor from Columbia Maryland says:
August 15, 2017
The house was built in 1992.

I would also like to get replacement latches
User submitted photos of window hardware.
Profile picture of Casey
Casey from SWISCO responded:
August 21, 2017
Thanks so much for contacting SWISCO.com. It looks like you need our Series 390, but double check the length. Make sure you are measuring only the metal portion of your balance. Typically a stamp of 2830 indicates a 29-inch channel balance. Your lock could be 90-005. Compare our measurements to yours and see if it's a match.
29" Series 390 Channel Balance
29" Series 390 Channel Balance
S390-29
$11.10
Take Out Clip
Take Out Clip
16-002
$0.41
Window Sash Lock, 2-1/4"
Window Sash Lock, 2-1/4"
90-005
$2.05
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