984 Series

The 984 series is a standard mount constant force system. The interlocking coils give the customer a modular solution to achieve the exact coil weight to match the sash weight. Mounted below the tilt latch, it gives good protection to dirt and debris in new construction environments.

product highlights

  • Recommended for:  aluminum, composite, vinyl, and wood
  • AAMA 902 Certified
  • Side locking or back locking shoes available
  • Stainless steel springs with natural colored housings
  • Patented interlocking 1/2" coil spring system
  • Fits 1.25" pocket, easily installed, minimal sku's needed
  • Can hold from 7 lbs. up to 80 lbs. and offers 35" of travel
  • Can be purchased in bulk or pre-assembled


Attribute Value
Weight Capacity 5 - 80 lbs