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Bifold Door Seal Replacement It is important to maintain the climate control, energy efficiency, and quality of the room by sealing bifold doors in a proper manner. But, like any door, they are subject to problems from time to time. The gasket seal made of rubber can flatten, harden or become brittle with time, decreasing its ability to stop draughts. This is easily fixed using this seal kit replacement. Frame Bifold doors let in lots of light and can open up the space. They can als