A window bottom seal strip is a component installed at the bottom of a window frame. Its primary purpose is to provide a barrier against elements such as water, dust, and air, thereby improving energy efficiency. Typically made from materials such as rubber, silicone, or vinyl, these strips help to create a tight seal when the window is closed, preventing drafts and moisture from entering the home. This not only contributes to a more comfortable living environment but also helps reduce heating and cooling costs.