Bilt Best Window in the center of the double hung window

Question

I've ordered 58-055 for the top and bottom of my window, but noticed this ribbed weather stripping in the middle where the two windows meet. what type is this, I placed an order today, but may need to add this weather stripping to it. Home was built in 1998

Casey · Accepted Answer

We think that you could use our Kerf Mount Bubble Seal, 58-053 between your windows. Please compare your measurements to ours and see what you think.