https://mozillabd.science/wiki..../Dont_Believe_These_
Bifold Door Seal Replacement It is crucial to keep the climate control, energy efficiency, and overall quality of the space by ensuring that bifold doors are sealed in a proper manner. However, as with any door system they can be subject to problems from time to time. The gasket seal's rubber material can become hard, flatten or become brittle after a certain period of time, decreasing its ability to stop draughts. This can be easily corrected by replacing the seal with this kit. Frame B