Sturdy uses a special snowflake insulation material that nobody else uses in safes/security containers in that size range, and they are either unwilling or unable to have their safes fire tested by an independent lab (which for some reason they advertise as a feature on their web site). If it worked, it would be great--the fire lining material in any other gun safe or other residential safe works by releasing water, which turns into steam, absorbing great amounts of heat in the process. This also, of course, bathes the safe contents in superheated steam, which isn't the greatest situation for much of anything (though it's better than burning). Sturdy's material doesn't work this way; it's a purely passive insulator. If it were effective at keeping the temperature down, it would be great. But, if it were effective in keeping the temperature down, don't you think someone else would be using it?
They are also unwilling or unable to have their safes UL tested for security, even to the RSC standard.
I also don't see that Sturdy's pricing is that great. For example, their 60 H x 32 W x 24 D model (
http://www.sturdysafe.com/products/model-3224), with fire lining and the warranty "upgrade" to include shipping, is $2603. The Amsec BF6030 (60 H x 30 W x 26 D), which includes both of those as stock, is $2519 shipped from
http://www.safeandvaultstore.com/amsec-bf6030-gun-rifle-safe.html. Amsec has had that model UL rated (as an RSC) and lab fire tested (to 2 hours). The BF safe also has 1/2" plate steel in the door, compared to 5/16" for the Sturdy.
If you want a "real safe", it's going to have a UL TL rating. It's going to be heavy (the BF6030 weighs 1036 lb, while a TL-rated safe of similar size will be over 3000 lb), and it's probably going to be expensive, though you can sometimes find them used at bargain prices.
