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It was a while back so it might have fallen under the "box of stout construction" category - can't remember

Either way the inspector took a look at it and passed it - the door secured with 2 Ross...

That may be true but mine include a large pistol safe and a large ammo storage area so it worked out to be cost effective

2x sheets 6mm steel at @ $250 and 2 x Ross 5-lever locks (mebbe 200 each? can't remember)
Couple lengths 25x25 around the door interior frame and as anti-pry edges

Welded farmgate hinges on...

Built mine for about 70% of the price it would cost new