1982 aluminum window balance channels

Question

We have 3 broken balance channels for our 1982 57" x 34"aluminum windows and cant seem to find an exact match. The bottom piece of the balance channel seems to be rounded in all of the replacement channels we have seen and ours is pointed (best seen in last picture attached) - other than that they are very similar. The number etched on the channel is 27 C.

Bob · Accepted Answer

Thanks for posting. It looks like you have a 28" Channel Balance (not including the nylon fittings on each end) with a 19-002 Top Fitting. For the bottom fitting, I'd like you to measure its depth, or 'heel-to-toe' measurement. The image below depicts what I'm talking about for two types of balances, the Series 380 and Series 385. See if your balance's shoe matches one of these, or is in fact greater than both (I think it might be). Let me know what you find.

Comparison of the S378, S380 and S385 balance shoes.