Window Channel Balances
A handy person from Florida says:
July 28, 2016
The size stamp on my Balance 28DS41 I bees 4 Pecies
Tom from SWISCO responded:
August 1, 2016
Thanks for posting. I'm afraid I cannot identify what you have based on this stamp alone. I recommend that you look at our Channel Balance Home Page and follow the steps in order to find the Series that best matches what you have. You will also need to weigh your sash to confirm the best option.