Searching for I can see daylight the side of my windows. Looks like the felt stripping needs replaced, how do I go about this?

Thanks for posting. See the videos below which detail how to remove and replace wool pile weatherstripping, as well as how to identify replacements. We will need the size of the base as well as the height of the pile. Wool pile measurements are very discrete, often going into the X/32" range, so be specific as possible. In the time being you can view our selection of wool pile here.