I purchased and installed 11 single hung Milgard windows in June 1984 and March 1985 in Seattle, WA. I have replaced the balances in several of the windows at various times over the past 37 years and may have used incorrect balances in the past.
There are quite a few variations in the existing balances and I don't know which ones, if any, are original or correct. Several of the balances are broken. All need to be replaced. Seven of the windows have a mix of the following balances: 27D; 2740 D; 2740 CP. Two wider and heavier windows have a mix of the following balances: 25 5 BSI PN; 26 5 G19T CMC 1.
What is strange is that these windows are the same height as the seven above. All are hard to close. A small kitchen sink window has the following balance: 1540 BSI BP; and one window slightly smaller than the first seven has a balance labeled 24 B. This last window is the only one that works well. Other working windows are difficult to close. The first 7 windows weigh 19 pounds each; the second two windows weigh 23.5 pounds each; I could not remove the kitchen sink window due to lack of take-out clips; the last window weighs 14.5 pounds.
Some of the balance shoes and tops have wings and some do not. Some of the balance shoes have a built in pully but most do not. Identifiers on the window spacers themselves are difficult to read but look like: A-L-I AP 1 G A June 1, 1984 and March 15, 1985. Payment dates coincide with the window purchases as 6/16/84 and 3/28/85 respectively.I have submitted pictures, but, again, I have no idea which of these is from the original window purchase. All seemed to have worked at one time or another.Any help you can provide would be greatly appreciated.--Dean
