Hide passports, cash, and small devices inside a metal compartment that sits behind a real vent cover. Installation is straightforward with the included guide, and the optional combination lock adds another layer of protection. With more than 300 cubic inches of space, it’s a powerful alternative to obvious hiding spots. Searches like hidden wall safe vent, fake vent diversion safe, and secret storage in wall lead here. A smart holiday buy for homeowners building a layered home security sage plan.