36 15 Non-Tilt Window Balance. 37" Channel Balance Length. Weight Range: 48-51 lbs. Double spring window balance with 61-502 and 61AP-500 end brackets attached. Length of Metal Channel: 37". Number Stamped on Balance: 36 15. 61AP series Caldwell window balance.
Special order, non-returnable. Allow 3 to 4 weeks to ship.