Casey from SWISCO responded:
December 13, 2023
Hello, 7/8" is a bit small for the 82-002. My concern is that the two halves may bump into each other in the door frame when installed. The 82-002 is designed for 1" to 1-1/8" thick doors. We can't guarantee its efficacy for doors outside of that range but you're welcome to give it a try. If you run into any problems, our return policy can be found here.
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