Your site shows Stamp Options 2810, 2820, 2830, 2840, 2850, 2860. The balance from my window has 28C stamped on it. Does that correspond to 2830 or what?
Jim
Paul from SWISCO responded:
March 21, 2016
Hey, Jim. Yes, a 28C stamp usually corresponds to our 2830 option. However, if you want to be 100% sure, you can always weigh your sash and refer to the chart we show on the S380-29 store page.