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Bifold Door Seal Repair Bifold doors make a fantastic addition to any home, but they require proper installation and regular maintenance for proper operation. This includes a thorough integrity check and lubrication, as well as a review of any issues to prevent them from occurring in the future. Bifold doors are made slightly smaller than their frames in order to prevent sticking. However, this also means that air can leak in through the gap. Install an air seal to correct this issue. Da
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