This is a video on how to replace a single-hook mortise lock on a sliding metal, vinyl or wooden patio door.

For vinyl and wooden doors, install part #15142 on our website: http://www.allaboutdoors.com/product_info.php?products_id=15142

For metal doors, install part #15143 on our website:
http://www.allaboutdoors.com/product_info.php?products_id=15143

Both locks install the same way.

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