Hello,
We are looking for a block and tackle balance for Great Lakes Windows. 27HD code stamped on balance. 27.75" length
Thank you for your help!!
Block and Tackle Balance

Landlord from Sartell, MN
Oct 4, 2021 4:40 pm
3 user uploaded images
4 Replies

Emily from SWISCO
Oct 7, 2021 3:29 pm


Hey there!
It looks like you have our S770-27 channel balance. To determine what spring strength option you'll need, we recommend weighing your sash on a scale. There's a chart on the S770-27's store page that will show you which option you'll need based on the weight of your sash.
If you have any questions just let us know!

Landlord from Sartell, MN
Oct 7, 2021 3:39 pm
Thank you so much for your response Emily!!
Those do look like the correct ones.
Thank you again!!
Those do look like the correct ones.
Thank you again!!

Emily from SWISCO
Oct 8, 2021 9:00 am


Absolutely! If you have any future hardware questions, you know where to find us!
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