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My new opener is bolted to the wall and is hooked to the shaft of the spring bar. It has a mechanical bolt that pops into the track and is securely locked and can't be raised without the bolt removed. It is servo with an electric connection that can be operated by hand if the power is off.
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Glen
49 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
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