Coil Spring 1/2 inch Constant Force, 3.5 Pound 1-1/4 Universal Pocket

Universal Constant Force balance for single or double hung sliding windows with 1.25 inch pocket

Pocket Width: 1.25 inch
Coil thickness: 1/2 inch
Weight Capacity: 3.5 pounds
Number on Balance is located on the end, sometimes hard to see

Available in several weight capacities: 3.5, 4.5, 5.5, 6.5, 7.5 and 9 pound. Coils can be mixed together to match appropriate sash weight