window balance part # 2190 BH 30 for 20 year old Windowmaster window

Home Owner from California
I would like to buy 2-replacement balances for my 20 year old Windowmaster window complete with plastic ends already installed would be great, I'm including 3 pictures. The overall length of the metal is 22" long and channel is 9/16" or 5/8". Let me know if you need any other information or measurements to give me a part number and price quote.
Thanks,
Jim
User submitted photos of a window balance.
2 Replies
Tom
Tom from SWISCO
SWISCO
Expert
You have Series 380 or Series 385. See which shoe below you have. The 1" one is Series 380, and the 1-3/32" one is Series 385. Then, measure your metal channel to confirm that you need S380-22 or S385-22. Finally, weigh your window sash. The weight can be compared to the chart on the item webpage (the page for the balance you end up choosing), which lists the correspondence between the sash weight and the stamp option.
Comparison of 15-004 and 15-005
Comparison of 15-004 and 15-005
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