84 Series Gas Lift Balance 84-60-1

84 Series 5/8" Pneu-Lift Tilt Window Balance with 60-518 attached. Balance length: 28-1/4"". All balances are same length. Only gas pressures differ.
Will not work for the old style 3/4" balance

Suggested Weight Per Pair: 32-36 lbs.
Suggested Weight 4 Per Sash: 64-72 lbs. 

***Special order, non-returnable. Allow 3 to 4 weeks for shipping.