Need to Replace Broken Channels in MW Vinyl Windows.

Question

We have MW Vinyl Windows installed in our home that was built in the year 2000. Many of the window channel balances have broken at the top where there was a plastic piece that fit into an approximately 1/4" square hole. I don't think these balances are manufactured any longer and we are looking to replace them with a comparable channel balance. We have single hung windows. The measurements are as follows:
Lower window sash: Height 30 1/4 " and Width 32 3/4"
Visible window glass lower window sash: Height 27 1/8" and Width 29 13/16"
Lower window sash weight: 18.6 pounds
Total window including vinyl framing: Height 60 1/2" and Width 34 1/2"
Pivot bar portion that slides into window: 2 1/2"
Pivot bar portion that sticks out of window 5/8"
T Shape Shoe: Height 1 1/2" and Width 1 1/4", narrow stem is 1/2" wide
Channel length: 28 1/2" long

Thank you for your advice on what parts I will need to replace the entire channel.

Tom · Accepted Answer

You have an old rod type balance that has been discontinued for many years and is no longer made. We sell a more modern channel balance that should work in more or less the same way, but the process of conversion is a little involved.

Before we go any further, can you confirm that the diameter of the spring is 1/2"? I don't see that measurement in your list and it is fairly important.

Assuming that it is, then you can use our Series 795 as a substitute. The video below will walk you through the process of conversion every step of the way.