Thanks for all of your replies but I don't think I explained our problem very well. I said we have sliding glass "pocket doors" going out to our lanai, but I probably should have described them as "stacking sliding glass doors'. The opening onto our lanai is 12 feet and we have four 3 foot sliding glass doors. If we push the left door all the way to the right, it engages the other doors, so we eventually have all four doors stacked together and the entire 12 foot space is open onto our lanai.
Since these types of doors are pretty common in TV, I thought someone would have a good idea how to provide better security against burglars or nosy alligators. Thanks for your help.
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