Replacement window balancer for Milgard Window

Home Owner from California
Milgard Single Hung Window

MFGR: MIL-027-4
SERIES: 1521/2551/2571
MST: 4-6/7-6
MVT: 53" X 45"

The balancer measures approx 22" long and 9/16" wide. The balancer is stamped with "20 4 CP CALDWELL".
User submitted photos of a window balance.
3 Replies
Home Owner from California
The metal portion of the balancer is ~21" long and the shoe is ~1" deep.
Tom
Tom from SWISCO
SWISCO
Expert
If you have wings on the top and bottom attachments and a 1" deep shoe, then you have a Series 380 balance. A 21" channel means you need S380-21, and you should suspect that you have a 2040 stamp option for a window sash weighing 15 to 23 pounds, due to the code of "20 4" on the old balance. Double check the weight to be sure, and then you can place an order on our site!
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