What have you done to accomplish this? Is there a more reasonable product? This thing does not need to withstand a Chinese bombardment, it does need to stop bored children for 15 minutes.
My first thought: http://www.vlineind.com/ProductDetail.php?product_id=32
It does need to be non-electric locking and quick access type. I have a thing about electronic locks and therefore that is not negotiable.
My second thought is build something myself, but I'm not experienced installed doors with locks like this, nor do I know where to get just a door to fit this description.
PM if your own secrecy prevents you from posting in a public forum.
