Channel balance match

Thanks for the detailed information. Either our Series 380 or Series 385 could work for your window. To determine the best match, you will need to measure the depth of your bottom balance, like in the diagram below, to decide on a match. Whichever one decided on will use a 25" and 19" inch. And for the stampings, go with the 2440 and 1830 options. 

Alternate view of 15-004