27" Caldwell Series 300 5/8" Channel Block & Tackle Window Balance - Stamp 26-6

Good to have the window sash stops replaced prior to replace and balancers. Order the correct window balances as well. The balancers have three digit number on them stamped

These were easy to install and the windows open and close like when they were new. The old ones were 19 years old and would stick and sometimes take everything I had to open and close the window. I pu the first set on my worst window and it open and closed with one hand. I am replacing every window in the house with these.

The reason I gave a one star, because I received a defected window balance. The outside metal was bent/dent, which would not allow the window balance to work properly. Upon installing the window balance the string popped. This is not the first time ordering a window balance and did not have any problem with the other two orders.

kind of a pain to install but fixed my window. Instructions would be nice.