28-7/8" non tilt window balance spring. 2865 Stamped on Balance. Rivet free Channel balance with attached top bracket 60i-501, bottom bracket 60i-504 and 60-518 clip. Sash Weight: 35 to 39 lbs. The bottom bracket contains a roller.
***Special order, non-returnable. Allow around 3 to 4 weeks to ship.