27 14L single hung window balance spring

Hey there,

Thanks for writing in! Your channel balance appears to be similar to either our S351-28 with a 1" shoe depth or our S390-28 with a 1-1/8" shoe depth. To confirm which series is the closest to your balance, you'll need to confirm the measurement for the depth of your shoe. Please let me know if it differs from either measurement.

Comparison of the S351 and S390 balance shoes.

The 27 14L stamp from your balance cannot be cross-referenced with our stamps, unfortunately. With that said, I will need to know the exact weight of your sash to confirm the correct stamp option your balances need.

Thanks for confirming. As recommended above, you'll need the S390-28 since your balance has the 1-1/8" shoe. 

Since the sash weighs 44lbs, our 2780 stamp should work well to support the weight of your sash.