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Bifold Door Seal Replacement It is crucial to keep the temperature control, energy efficiency, and overall quality of the space by ensuring that bifold doors are sealed correctly. Like any other door system they are susceptible to issues. Over time, the rubber gasket seal may flatten and become brittle or harder and less able to impede drafts. This can be easily repaired by replacing the seal with this kit. Frame Bifold doors let in plenty of light and let in more light to an ar