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Paul from SWISCO responded:
April 25, 2023
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! |
