Window balance

Quick Learner from Medina Ohio
Marking on window balance says 27S30 and underneath that it says BSL underneath that in tiny letters, it says NB . Need replacement thank you very much.
2 user uploaded images
14 Replies
Casey
Casey from SWISCO
SWISCO
Expert

Hello,

We'd be happy to help but, unfortunately, your balance is too damaged to identify. We'll need to see the clip attached to the end of the pulley of an intact balance, as well as confirm how the top of the metal channel installs in the window jamb. We'll also need to know the exact weight of your window sash to determine the spring strength needed for your replacements. Thank you. 

Quick Learner from Medina Ohio
The weight of the sash is 33 lbs
2 user uploaded images
Casey
Casey from SWISCO
SWISCO
Expert

Thanks for getting back to us. We're making progress but we'll still need to see the metal clip attached to the end of the pulley cord that is used to install the balance to narrow down your options. Please also confirm the length of the metal balance channel. 

Quick Learner from Medina Ohio
It is 28 inches long
3 user uploaded images
Casey
Casey from SWISCO
SWISCO
Expert

The part in your photo is a piece of the assembly that holds the pulley inside the metal channel. What we need to see is the fitting that attaches the balance to the pivot shoe or bracket below the balance. 

Quick Learner from Medina Ohio
I hope these are the pictures you requested Thanks
4 user uploaded images
Casey
Casey from SWISCO
SWISCO
Expert

Perfect! Your balance resembles the S770-28 with 28F strength options to support a sash between 32-36 lbs. Take a look and let us know if you need anything else. 

Close up view of the Series 770 balance top.
Close up view of the Series 770 balance top.

Close up view of the Series 770 balance bottom.
Close up view of the Series 770 balance bottom.

Quick Learner from Medina Ohio
Do you know which pivot shoe I need too? Thanks
Casey
Casey from SWISCO
SWISCO
Expert

We can't be sure with your shoe still installed but the 15-178 and 15-188 are similar. The determining factor would be how the width and thickness compare to your pivot shoe. 

Dimensions for 15-178
Dimensions for 15-178

Alternate image for 15-188
Alternate image for 15-188

Quick Learner from Medina Ohio
Ok thanks. Also do you know if you carry this tilt latch? Thanks
4 user uploaded images
Casey
Casey from SWISCO
SWISCO
Expert

Unforutnately, we do not carry a match for the tilt latch shown in your photos. Our best option would be to see if you could adapt a surface-mounted replacement to work by following the video below. Take a look and see what you think. 

Quick Learner from Medina Ohio
Ok I will look into those. Thank you Casey, I appreciate all your help!
Casey
Casey from SWISCO
SWISCO
Expert

We're happy to help! 

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