Window Coil Balance Replacement Parts
Hello,
We can't be sure with the hardware still installed but your photos resemble the 15-087 housing pivot, which uses the Series 180 coil springs and 15-086 tandem housing. Take a look and compare the specifications below and the accessories related on our product pages to yours. We'll also include a diagram showing the configuration of this assembly.
We sell a pivot bar case similar to yours, the 26-382S, but ours might be a bit longer. The 26-382S remains our closest possible option but we can't guarantee it will work if the dimensions don't match.
We also sell the 26-040 pivot bar separately. Look over these parts and see what you think. Thanks for posting!