Parts for Quaker windows

Question

Hello, I have to replace some balances for Quakers windows. After reading your helpful descriptions on parts identifications I continue to question the correct top which I believe to be the 19002 and shoe which I believe to be the 15-002. I have enclosed a photo of the typical balance.

The balance is 1/2". The stamp on the side is 16-4. However, when I measure from the metal end to the other metal end, the distance is 17". I have the same situation with a balance that measures 21" and is stamped 22".

I need balances in assorted sizes and have recorded the stamped numbers. In all instances the stamped number is 1" smaller than the physical length of the metal piece.

I look forward to your help in ordering the correct pieces.

Attached: photo of 17" and 22 inch stamped markings

Bob

User submitted photos of a window balance.

Paul · Accepted Answer

Thanks for posting. The length and stamp difference you noted is normal. A 17" long balance is supposed to have a stamp starting with "16." The reason why this is the case is a little involved, so to avoid going on a tangent just know that the stamp is not a hard representation of any physical detail of the balance. It is only a code that indicates what its spring strength might be. If you have the 19-002 top and 15-002 bottom, I would recommend the Series 351 channel balance.