984 Series Coil Balance

984 Centurion 1/2" x 1-1/4" pocket for Single Hung and Double Vinyl Windows Standard Duty and Heavy Duty 
Break shoes are interchangeable, Can be purchased in bulk parts or pre-assembled   
Sold as individual components or springs will interlock to make  Doubles, Triple or Quad Units   
Can hold from 7 lbs. up to 80 lbs. and offers 35" of travel
Recommended for aluminum, composite, vinyl, and wood windows.