One piece 27" (26-4-721-621-1) block and tackle side load window balance

This product is used as replacement for a window balance, size 26-4, with broken string. It perfectly fits my sliding window and works good. But the delivered balance isn't stamped at all. I would suggest to the seller to stamp the balance. It would help in avoiding confusions in future replacements.

Very satisfied, works just fine.

Just what was needed to fix our window, came complete and fast shipping.