Constant Force Coil Window Balance

Open and close your windows with smooth, quiet and out of sight performance as an option on our 700 series window. The unique wheel and patented pivot bar system provides superior constant force window blance operational performance.

The Four Jaks Constant Force Window Balance is "Built to withstand a Hurricaine, but made for effective everday use!"  The Four Jaks Balance enhances your windows with the following beneffits:

  • Constant force spring provides smooth, even operating force!
  • No adjustments required!
  • Corrosion resistant stainless steel coils!
  • American made product!
  • Spring manufacture by American Spring Compnay with 150 years of experience!
  • Smooth operation with reduced noise provided by the coil riding on the wheel!
  • Patented sash retaining pvot bar to shoe system!
  • Mounts below the meeting rail so no balance cover is required!
  • A single pair of 9 lb coils for a 18 lb sash!
  • System stackable up to four springs for a 72 lb sash!
  • Preassembled for easier manufacturing or field replacement!
  • AAMA approved 902-99!
  • Four Jaks balances have been engineered with customer satisfaction as a priority:


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