Hi,
I've installed 4 internal Western Cedar bifolds, a set of two doors on each side, forming an airlock to the entrance to my home. On windy days when someone open the external door and the wind blows in, the bifolds open. I dont want to lock the two sets together - I'd rather have something in the middle of each set such as a spring loaded ball or something like that, but I am not sure if the ball will be strong enough to hold the doors in place. Another option is two door bolts in the middle of each set, but this is less attractive as it will be seen, and also difficult as I have very young kids.

Any suggestions?

thanks


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