Window balance on what we believe are old Menards performax double hung windows

This old crossbow balance is no longer made, but one of our tilt window channel balances can replace it. To know which, please remove the old balance and measure the spring diameter. Let us know what you think.

Great! That's going to make this project a whole lot easier for you. Please see our Series 795. This is a modern balance made for an entirely different window, but we've found that it can still work on your application with a little handiwork. The video below will explain everything you have to do, step by step.