One piece 28″ (27-4-720A-617-1) block and tackle side load window balance
Top Guide Number: 720A. 28” Block and Tackle Balance for Non Tilting Windows. Bottom Guide Number: 617. Stamp number: 27-4. Weight Capacity(lbs.).
Top Guide Number: 720A. 28” Block and Tackle Balance for Non Tilting Windows. Bottom Guide Number: 617. Stamp number: 27-4. Weight Capacity(lbs.).