Andersen Exterior Keyed Lock (3-Panel Door) with Keys – Silver Satin Finish
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Works with Perma-Shield Gliding Patio Doors manufactured from 1968 to Present.
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Used with three panel gliding patio door with operating door in middle (stationary x operating x stationary).
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This lock will allow you to lock and unlock your gliding patio door from the exterior using a key.