Bathroom window

Question

No parts numbers found for bathroom window or balance spring. The spring itself is slightly larger than a US quarter, is 1/2" wide and guesstimated to be att least 3' in length fully unrolled. The window itself is approx. 19 1/2" H X 21 1/2" W and weighs around 5 to 6lbs.. The spring tip end inserted into the window frame slot, only needs around 17" of travel to the center of the balance spring roll itself, when the window is closed.

Jasmine · Accepted Answer

This coil assembly is made with the 15-102 Double Side Load Carrier. To determine if this is the correct replacement match, carefully review and compare the dimensions below.

Since the sash weighs between 5 and 6lbs, I suggest using the S145-3 Balance Spring. Although, you may want to be sure to confirm the exact weight to ensure the springs aren't too light or too heavy for the sash.

Alternate view of 15-102