I need several different window balances.

Question

I have 29-5 LX CMC 11

I know what the 29-5 means, it is like your 2950.

But what does the LX mean?
And the CMC 11 mean?

I also need (4)29-1, (10)29-2 and (14) 29-5 (Qty) all with wings top and bottom.

Bob · Accepted Answer

Thanks for posting. The letters on the stamp beyond the initial digits are manufacturing codes that are not particularly relevant. Please note that the relevant part of the stamp (29-1, 29-5, etc...) are not identifiers--they just tell us the strength of the balance. It's the combination of attachments or fittings that determines the balance's identity. Make sure the top fitting looks like the 19-005, pictured below. Please send us photos if it does not.

Detail of 19-005

Assuming the top fitting is the 19-005, then this balance appears to either be an S380-30 or S385-30. The only difference between these two balances is the 'depth' of the bottom nylon shoe, as pictured below. Compare both balances with your old hardware to see what matches best. For a stamp option, choose 2910 for the balances stamped 29-1, 2950 for the balances stamped 29-5, and 2920 for the 29-2 stamped balances. Let me know if you have any questions.

Comparison of the S378, S380 and S385 balance shoes.