Block and tackle replacement

Hello there!

Thanks for reaching out to us. Take a look at our S380-27 or S385-27 channel balances. One of these appears to be what you may need. Measure as shown below to determine the accordant Series. There should also be a stamp printed on the metal channel that will indicate what option is needed for your replacements. 

Comparison of the S380 and S385 balance shoes.

My apologies for the confusion. Please see the image below and let me know if this clarifies things.

Profile view of a winged balance attachment

The top sash guide shown here is no longer made but the 18-171 may work for you. You would just need to cut the top down since ours is a little taller. Take a look and see what you think. 

I also recommend the 2650 stamp option based on your old stamp. 

I'm sorry to say we don't sell a balance with the shoe depth you need. The Series 385 appears to be the best we can offer but we can't promise the functionality or a direct fit. I've linked our return policy here just in case. 

As for the top sash guide, I'm afraid it won't work without the top "square" so cutting the top down for the 18-171 is necessary.