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Bifold Door Seal Replacement Bifold doors are a favorite choice for hangars, garages and other industrial spaces because of their efficiency in utilizing space and quick access. It is essential to keep them sealed to ensure the sake of energy efficiency, cleanliness and a relaxing atmosphere. As time passes, gaskets begin to flatten and shrink or are damaged, leading to leaks, draughts, and loss of heat. This is a quick and simple fix. Seals on Top Rubber seals on bifold doors can flatten out or