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Bifold Door Seal Replacement It is important to maintain the temperature control, energy efficiency, and overall quality of the space by ensuring that bifold doors are sealed in a proper manner. But, like any door system they can be susceptible to issues at times. The gasket seal's rubber material may become brittle, harden or become brittle with time, reducing the ability to stop draughts. This can be easily corrected using this seal replacement kit. Frame Bifold doors are ideal for letting in plenty