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Bob from SWISCO responded:
December 10, 2018
Hello and thanks for contacting SWISCO. Thanks for providing photos of your nylon attachments. They are indeed the same for all 3 pairs of balances you require, right? Based on their unique configuration it looks like the Series 395 is the kind of channel balance you are looking for. And since your metal channel is 29" long, you want to look at our S395-29 specifically. The only question now is what stamp option you should select. You have a stamp imprint of 2820 on your balance. However, you say your window sashes weigh 20 lbs. The 2820 is meant to support a somewhat lighter weight than what you require (12-16 lbs). So if you are certain your window weigh around 20 lbs, you might want to look at the 2830 option instead, which is meant to support 16-23 lbs of weight. |
