I need two window balances. 33" long (metal to metal) Plastic "wings" on both ends. Marked 3240. 1/2 x 5/8" ? I have photos of plastic ends. Window is 33 3/4" wide x 35 3/4" tall and wieghs 22 pounds. Non Tilt type.
Thank you
Window Balance

Home Owner from CA
Dec 22, 2024 4:59 pm
2 user uploaded images
2 Replies

Bob from SWISCO
Dec 22, 2024 5:59 pm


Thanks for posting. Without photos of the nylon attachments at both ends I can't be totally certain, but based on your description I suspect this is either an S380-33 or S385-33. The only difference between these two channel balances is the 'depth' of the bottom nylon shoe, or the 'heel-to-toe' measurement. See the diagram below for reference. Compare both balances with your old hardware to see what matches best. For a stamp option choose 3240.

Comparison of the S378, S380 and S385 balance shoes.
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