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What are the Advantages/Disadvantages of each Threshold Option?

April 26, 2017advantages disadvantages option threshold

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What are the Advantages/Disadvantages of each Threshold Option?

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Top Running – The bulk of the gearing is at the Top of the door. Ad: The threshold/up-stand at the base of the door is slightly smaller, compared to a Bottom running door. Dis: The door must be securely fixed to either a lintel/RSJ or a solid fixing, otherwise the doors will drop making them unusable.