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Bifold Door Seal Replacement It is crucial to keep the climate control as well as the energy efficiency and quality of the room by ensuring that bifold doors are sealed correctly. As with any door system, they can have problems. Over time, the gasket seal may flatten or become brittle, harder and less able to impede drafts. This can be easily corrected by replacing the seal with this kit. Frame Bifold doors are great to let in lots of light and making a room appear larger. They also work well fo