Wool Pile weather stripping

Hello Kiran. I am afraid we would not know the size of the weatherstripping you need for your 4300 Series window. The best strategy in going about locating a replacement for you would be to have you carefully remove the end portion of your weatherstrip using a utility knife and pulling it off the window. Once you have done that, you would then need to provide us with the width of the base and the height of the wool pile.