This is a SnapSafe , model 75900.
SnapSafe has a variety of different safe sizes and accessories such as organizers" dehumidifiers and racks. In addition to safes" they also manufacture lock boxes and specialty safes that can be stored in vehicles" under beds" or in walls.
Features:
Absorbs Humidity from Enclosed Areas
Contains No Harmful Chemicals
Prevent Mold and Mildew