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With a tiny deadbolt that only locks into the frame and a frame that is bolted to the concrete with expansion anchors with the nut on the outside of the door.
With a tiny deadbolt that only locks into the frame and a frame that is bolted to the concrete with expansion anchors with the nut on the outside of the door.
I agree with you on the deadbolt. But it actually has big L brackets that will be welded to the frame and they will be anchored on the inside of the shelter. It will also be filled with concrete. It has two big latches on the inside. I guess the deadbolt is just to lock it up from the outside when not in use.