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Bifold Door Seal Replacement Maintaining the proper seal of bifold doors is vital to maintain energy efficiency, climate control and the quality of the area. However, as with any door, they are affected at times. Over time, the gasket seal could become flattened, become harder or brittle, and reduce its ability to stop drafts. This is easily remedied with this seal kit replacement. Frame Bifold doors let in plenty of light and let in more light to a space. They are also useful if you ne