Replacement Spiral Balances

Question

Looking for replacement spiral balances. Currently looking in to the Series 600, however, the tip length of the original is a concern.
These are tilt windows and the original balance diameter is 3/8"

Paul · Accepted Answer

Hello,

The inside coil will be 3/8" but the outside cover should be closer to 5/8". If so, you would use Series 600-29 spiral balances for your repair. The pins appear to be 1/2' apart based on your photos, which would match our replacements. For the spring weight, you may be able to use red tip options tp support a window between 7-29 lbs. Take a look and thanks for posting!