Moosie.. I've looked at those. Nice that its thicker. I don't like safe electronics & batteries but the D version can also be plugged in and I happen to have AC in my car and truck. One thing that kept me from purchasing it was having it bolted down and attacked with a heavy flat screwdriver or pry bar. Have you tested to see if a flat screwdriver or knife can be easily wedged in the top corner to pry it open? With it bolted down a lot of force could be applied.
I know nothing is perfect but if it closes tight making it hard to pry on I might have to order one.
MarcB.. Metal in most of these are very thin. The actual thickness of a 'gauge' depends of the type of metal be it mild sheet steel, stainless, galvanized, aluminum, etc. The difference however isn't much and these portable lock boxes are simply mild steel where 21g would be 0.0329", 18g would be 0.0478" and 16g would be 0.0598". Google gauge thickness for more info or metric conversions. Btw the average human hair is about 0.004" thick. give or take.
Most large box store safes are only 14g - 0.0747".. Food for thought there. Thicker is always better. They all cut pretty darn easily with a cordless grinder and a cutting disk until you get down to 10g or better.
The Nano 200 or 300 are decent if you just need something now and don't have much to spend. The one Moosie posted is thicker and has more room. I think I'm gonna order one from
Amazon and give it a look see for myself. I need to get past the electronics I guess and keep the key on my keychain.