Looking for a knockbox.
I think the king cone is what I’m going with
I’m open to different options I have ran knockboxs so that’s the one I know but always like finding one better
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Bumpp
What location are you? In OK we had to have a time sensitive link sent by local fire marshal and purchase through them.
I’m in Colorado a knockbox is a joint machine
I totally thought you were referring to the Knox Box. I should check spelling before hand 
Apologies 