Thanks for posting. See either our S380-31 or S385-31. The only difference between these two Series is the 'depth' of the bottom nylon shoe. With the Series 380 the depth of this nylon shoe is 1", whereas with the Series 385 it is 1-3/32". Compare with your own and see what is best.
You'll need to choose a stamp option. Your stamp option of 3050 is for a window sash in the weight range of 28 through 32 lbs.