Works good for gun cabinet - Wheeler Engineering Golden Rod Dehumidifier

Works great in my gun cabinet. Lowers humidity level and keeps ambient tempature decently warm in relativity to the house temp. I definitely recommend for gun cabinets and smaller safes. Seems there are more practical solutions for larger safes. Also be sure to not keep to close to rubber/plastic butt stocks and it does generate some heat which could cause deformation to parts that are touching or within real close proximity. But, all in all, I'm happy with it, would recommend it, and will buy more for gun cabinets and ammo cabinets.