安全支架

[:en]The spring break device has the function of protection and absorbs the force of any cable break! 1” bore spring break protection device uses 2”, 2 5/8”,3” spring fitting.
The bottom safety device is also called the wire rope break protection device. When the power is off, it can prevent the door from falling. The device is suitable for 2’’/3’’ track and the advised max door weight is 750kg.[:]

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