Product Code: S159-06

6.5 lbs Series 159 Coil Balance

$6.14
Quantity Price
1-11 $6.14/ea
12-49 $5.53/ea
50-99 $4.91/ea
100-199 $4.60/ea
200-399 $4.05/ea
400+ $3.75/ea
Please Note: Bulk pricing applies only to purchases of the same option
Add to Wishlist
Product Description
This is a Series 159 stainless steel spring for tilt windows. It moderates the operation of your window sash using a specifically calibrated coil spring that allows the window to stay open when raised and remain shut when closed.
  • Individually, this coil balance can hold 6-1/2 pounds. This is added together with the other coils to support the whole weight of the sash.
  • The weight you need should be indicated as a stamp or imprint on your old spring.
  • Measures 3/4" thick.
  • The maximum travel length is 40".
  • Designed to work with a pivot shoe (sold separately).
  • This coil balance spring is sold individually, not in sets.
  • Can work for either the left or right side of the window interchangeably.
  • Coil balances are also known as constant force window balances.
Home Owner
Yesterday, 3:35 pm
Home Owner
Yesterday, 3:35 pm
Quick Learner United States
May 12, 2026
Quick Learner from United States
May 12, 2026
Quick Learner Grand Junction CO
May 4, 2026
Quick Learner from Grand Junction CO
May 4, 2026
Contractor Harford County
Mar 27, 2026
Contractor from Harford County
Mar 27, 2026
Home Owner Denver, CO
Jul 8, 2025
Home Owner from Denver, CO
Jul 8, 2025
Start a new Discussion
Current Photos:
Notice:
Your inquiry will be addressed by one of our specialists promptly. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.

Need immediate assistance? We’re here to help! Give us a call at (888) 991-1929 or email us at help@swisco.com.