If there s anything that s blocking the threshold even slightly your garage door will sense the blockage and reverse the direction to prevent damage or threats to safety. Before you break out your toolbox or call a professional for help take a look at your garage door s threshold. Injuries from garage doors account for about 20 000 er visits every year and 60 children have been killed since 1982 from garage doors that did not auto reverse when met with contact.
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